diff options
Diffstat (limited to 'sound/pci/pcxhr/pcxhr_core.c')
| -rw-r--r-- | sound/pci/pcxhr/pcxhr_core.c | 1214 |
1 files changed, 1214 insertions, 0 deletions
diff --git a/sound/pci/pcxhr/pcxhr_core.c b/sound/pci/pcxhr/pcxhr_core.c new file mode 100644 index 00000000000..fa0d27e2c79 --- /dev/null +++ b/sound/pci/pcxhr/pcxhr_core.c @@ -0,0 +1,1214 @@ +/* + * Driver for Digigram pcxhr compatible soundcards + * + * low level interface with interrupt and message handling implementation + * + * Copyright (c) 2004 by Digigram <alsa@digigram.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <sound/driver.h> +#include <linux/delay.h> +#include <linux/firmware.h> +#include <linux/interrupt.h> +#include <asm/io.h> +#include <sound/core.h> +#include "pcxhr.h" +#include "pcxhr_mixer.h" +#include "pcxhr_hwdep.h" +#include "pcxhr_core.h" + + +/* registers used on the PLX (port 1) */ +#define PCXHR_PLX_OFFSET_MIN 0x40 +#define PCXHR_PLX_MBOX0 0x40 +#define PCXHR_PLX_MBOX1 0x44 +#define PCXHR_PLX_MBOX2 0x48 +#define PCXHR_PLX_MBOX3 0x4C +#define PCXHR_PLX_MBOX4 0x50 +#define PCXHR_PLX_MBOX5 0x54 +#define PCXHR_PLX_MBOX6 0x58 +#define PCXHR_PLX_MBOX7 0x5C +#define PCXHR_PLX_L2PCIDB 0x64 +#define PCXHR_PLX_IRQCS 0x68 +#define PCXHR_PLX_CHIPSC 0x6C + +/* registers used on the DSP (port 2) */ +#define PCXHR_DSP_ICR 0x00 +#define PCXHR_DSP_CVR 0x04 +#define PCXHR_DSP_ISR 0x08 +#define PCXHR_DSP_IVR 0x0C +#define PCXHR_DSP_RXH 0x14 +#define PCXHR_DSP_TXH 0x14 +#define PCXHR_DSP_RXM 0x18 +#define PCXHR_DSP_TXM 0x18 +#define PCXHR_DSP_RXL 0x1C +#define PCXHR_DSP_TXL 0x1C +#define PCXHR_DSP_RESET 0x20 +#define PCXHR_DSP_OFFSET_MAX 0x20 + +/* access to the card */ +#define PCXHR_PLX 1 +#define PCXHR_DSP 2 + +#if (PCXHR_DSP_OFFSET_MAX > PCXHR_PLX_OFFSET_MIN) +#undef PCXHR_REG_TO_PORT(x) +#else +#define PCXHR_REG_TO_PORT(x) ((x)>PCXHR_DSP_OFFSET_MAX ? PCXHR_PLX : PCXHR_DSP) +#endif +#define PCXHR_INPB(mgr,x) inb((mgr)->port[PCXHR_REG_TO_PORT(x)] + (x)) +#define PCXHR_INPL(mgr,x) inl((mgr)->port[PCXHR_REG_TO_PORT(x)] + (x)) +#define PCXHR_OUTPB(mgr,x,data) outb((data), (mgr)->port[PCXHR_REG_TO_PORT(x)] + (x)) +#define PCXHR_OUTPL(mgr,x,data) outl((data), (mgr)->port[PCXHR_REG_TO_PORT(x)] + (x)) +/* attention : access the PCXHR_DSP_* registers with inb and outb only ! */ + +/* params used with PCXHR_PLX_MBOX0 */ +#define PCXHR_MBOX0_HF5 (1 << 0) +#define PCXHR_MBOX0_HF4 (1 << 1) +#define PCXHR_MBOX0_BOOT_HERE (1 << 23) +/* params used with PCXHR_PLX_IRQCS */ +#define PCXHR_IRQCS_ENABLE_PCIIRQ (1 << 8) +#define PCXHR_IRQCS_ENABLE_PCIDB (1 << 9) +#define PCXHR_IRQCS_ACTIVE_PCIDB (1 << 13) +/* params used with PCXHR_PLX_CHIPSC */ +#define PCXHR_CHIPSC_INIT_VALUE 0x100D767E +#define PCXHR_CHIPSC_RESET_XILINX (1 << 16) +#define PCXHR_CHIPSC_GPI_USERI (1 << 17) +#define PCXHR_CHIPSC_DATA_CLK (1 << 24) +#define PCXHR_CHIPSC_DATA_IN (1 << 26) + +/* params used with PCXHR_DSP_ICR */ +#define PCXHR_ICR_HI08_RREQ 0x01 +#define PCXHR_ICR_HI08_TREQ 0x02 +#define PCXHR_ICR_HI08_HDRQ 0x04 +#define PCXHR_ICR_HI08_HF0 0x08 +#define PCXHR_ICR_HI08_HF1 0x10 +#define PCXHR_ICR_HI08_HLEND 0x20 +#define PCXHR_ICR_HI08_INIT 0x80 +/* params used with PCXHR_DSP_CVR */ +#define PCXHR_CVR_HI08_HC 0x80 +/* params used with PCXHR_DSP_ISR */ +#define PCXHR_ISR_HI08_RXDF 0x01 +#define PCXHR_ISR_HI08_TXDE 0x02 +#define PCXHR_ISR_HI08_TRDY 0x04 +#define PCXHR_ISR_HI08_ERR 0x08 +#define PCXHR_ISR_HI08_CHK 0x10 +#define PCXHR_ISR_HI08_HREQ 0x80 + + +/* constants used for delay in msec */ +#define PCXHR_WAIT_DEFAULT 2 +#define PCXHR_WAIT_IT 25 +#define PCXHR_WAIT_IT_EXTRA 65 + +/* + * pcxhr_check_reg_bit - wait for the specified bit is set/reset on a register + * @reg: register to check + * @mask: bit mask + * @bit: resultant bit to be checked + * @time: time-out of loop in msec + * + * returns zero if a bit matches, or a negative error code. + */ +static int pcxhr_check_reg_bit(struct pcxhr_mgr *mgr, unsigned int reg, + unsigned char mask, unsigned char bit, int time, + unsigned char* read) +{ + int i = 0; + unsigned long end_time = jiffies + (time * HZ + 999) / 1000; + do { + *read = PCXHR_INPB(mgr, reg); + if ((*read & mask) == bit) { + if (i > 100) + snd_printdd("ATTENTION! check_reg(%x) loopcount=%d\n", + reg, i); + return 0; + } + i++; + } while (time_after_eq(end_time, jiffies)); + snd_printk(KERN_ERR "pcxhr_check_reg_bit: timeout, reg=%x, mask=0x%x, val=0x%x\n", + reg, mask, *read); + return -EIO; +} + +/* constants used with pcxhr_check_reg_bit() */ +#define PCXHR_TIMEOUT_DSP 200 + + +#define PCXHR_MASK_EXTRA_INFO 0x0000FE +#define PCXHR_MASK_IT_HF0 0x000100 +#define PCXHR_MASK_IT_HF1 0x000200 +#define PCXHR_MASK_IT_NO_HF0_HF1 0x000400 +#define PCXHR_MASK_IT_MANAGE_HF5 0x000800 +#define PCXHR_MASK_IT_WAIT 0x010000 +#define PCXHR_MASK_IT_WAIT_EXTRA 0x020000 + +#define PCXHR_IT_SEND_BYTE_XILINX (0x0000003C | PCXHR_MASK_IT_HF0) +#define PCXHR_IT_TEST_XILINX (0x0000003C | PCXHR_MASK_IT_HF1 | \ + PCXHR_MASK_IT_MANAGE_HF5) +#define PCXHR_IT_DOWNLOAD_BOOT (0x0000000C | PCXHR_MASK_IT_HF1 | \ + PCXHR_MASK_IT_MANAGE_HF5 | PCXHR_MASK_IT_WAIT) +#define PCXHR_IT_RESET_BOARD_FUNC (0x0000000C | PCXHR_MASK_IT_HF0 | \ + PCXHR_MASK_IT_MANAGE_HF5 | PCXHR_MASK_IT_WAIT_EXTRA) +#define PCXHR_IT_DOWNLOAD_DSP (0x0000000C | \ + PCXHR_MASK_IT_MANAGE_HF5 | PCXHR_MASK_IT_WAIT) +#define PCXHR_IT_DEBUG (0x0000005A | PCXHR_MASK_IT_NO_HF0_HF1) +#define PCXHR_IT_RESET_SEMAPHORE (0x0000005C | PCXHR_MASK_IT_NO_HF0_HF1) +#define PCXHR_IT_MESSAGE (0x00000074 | PCXHR_MASK_IT_NO_HF0_HF1) +#define PCXHR_IT_RESET_CHK (0x00000076 | PCXHR_MASK_IT_NO_HF0_HF1) +#define PCXHR_IT_UPDATE_RBUFFER (0x00000078 | PCXHR_MASK_IT_NO_HF0_HF1) + +static int pcxhr_send_it_dsp(struct pcxhr_mgr *mgr, unsigned int itdsp, int atomic) +{ + int err; + unsigned char reg; + + if (itdsp & PCXHR_MASK_IT_MANAGE_HF5) { + /* clear hf5 bit */ + PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0, + PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) & ~PCXHR_MBOX0_HF5); + } + if ((itdsp & PCXHR_MASK_IT_NO_HF0_HF1) == 0) { + reg = PCXHR_ICR_HI08_RREQ | PCXHR_ICR_HI08_TREQ | PCXHR_ICR_HI08_HDRQ; + if (itdsp & PCXHR_MASK_IT_HF0) + reg |= PCXHR_ICR_HI08_HF0; + if (itdsp & PCXHR_MASK_IT_HF1) + reg |= PCXHR_ICR_HI08_HF1; + PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg); + } + reg = (unsigned char)(((itdsp & PCXHR_MASK_EXTRA_INFO) >> 1) | PCXHR_CVR_HI08_HC); + PCXHR_OUTPB(mgr, PCXHR_DSP_CVR, reg); + if (itdsp & PCXHR_MASK_IT_WAIT) { + if (atomic) + mdelay(PCXHR_WAIT_IT); + else + msleep(PCXHR_WAIT_IT); + } + if (itdsp & PCXHR_MASK_IT_WAIT_EXTRA) { + if (atomic) + mdelay(PCXHR_WAIT_IT_EXTRA); + else + msleep(PCXHR_WAIT_IT); + } + /* wait for CVR_HI08_HC == 0 */ + err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_CVR, PCXHR_CVR_HI08_HC, 0, + PCXHR_TIMEOUT_DSP, ®); + if (err) { + snd_printk(KERN_ERR "pcxhr_send_it_dsp : TIMEOUT CVR\n"); + return err; + } + if (itdsp & PCXHR_MASK_IT_MANAGE_HF5) { + /* wait for hf5 bit */ + err = pcxhr_check_reg_bit(mgr, PCXHR_PLX_MBOX0, PCXHR_MBOX0_HF5, + PCXHR_MBOX0_HF5, PCXHR_TIMEOUT_DSP, ®); + if (err) { + snd_printk(KERN_ERR "pcxhr_send_it_dsp : TIMEOUT HF5\n"); + return err; + } + } + return 0; /* retry not handled here */ +} + +void pcxhr_reset_xilinx_com(struct pcxhr_mgr *mgr) +{ + /* reset second xilinx */ + PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, + PCXHR_CHIPSC_INIT_VALUE & ~PCXHR_CHIPSC_RESET_XILINX); +} + +static void pcxhr_enable_irq(struct pcxhr_mgr *mgr, int enable) +{ + unsigned int reg = PCXHR_INPL(mgr, PCXHR_PLX_IRQCS); + /* enable/disable interrupts */ + if (enable) + reg |= (PCXHR_IRQCS_ENABLE_PCIIRQ | PCXHR_IRQCS_ENABLE_PCIDB); + else + reg &= ~(PCXHR_IRQCS_ENABLE_PCIIRQ | PCXHR_IRQCS_ENABLE_PCIDB); + PCXHR_OUTPL(mgr, PCXHR_PLX_IRQCS, reg); +} + +void pcxhr_reset_dsp(struct pcxhr_mgr *mgr) +{ + /* disable interrupts */ + pcxhr_enable_irq(mgr, 0); + + /* let's reset the DSP */ + PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, 0); + msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */ + PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, 3); + msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */ + + /* reset mailbox */ + PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0, 0); +} + +void pcxhr_enable_dsp(struct pcxhr_mgr *mgr) +{ + /* enable interrupts */ + pcxhr_enable_irq(mgr, 1); +} + +/* + * load the xilinx image + */ +int pcxhr_load_xilinx_binary(struct pcxhr_mgr *mgr, const struct firmware *xilinx, int second) +{ + unsigned int i; + unsigned int chipsc; + unsigned char data; + unsigned char mask; + unsigned char *image; + + /* test first xilinx */ + chipsc = PCXHR_INPL(mgr, PCXHR_PLX_CHIPSC); + if (!second) { + if (chipsc & PCXHR_CHIPSC_GPI_USERI) { + snd_printdd("no need to load first xilinx\n"); + return 0; /* first xilinx is already present and cannot be reset */ + } + } else { + if ((chipsc & PCXHR_CHIPSC_GPI_USERI) == 0) { + snd_printk(KERN_ERR "error loading first xilinx\n"); + return -EINVAL; + } + /* activate second xilinx */ + chipsc |= PCXHR_CHIPSC_RESET_XILINX; + PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc); + msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */ + } + image = xilinx->data; + for (i = 0; i < xilinx->size; i++, image++) { + data = *image; + mask = 0x80; + while (mask) { + chipsc &= ~(PCXHR_CHIPSC_DATA_CLK | PCXHR_CHIPSC_DATA_IN); + if (data & mask) + chipsc |= PCXHR_CHIPSC_DATA_IN; + PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc); + chipsc |= PCXHR_CHIPSC_DATA_CLK; + PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc); + mask >>= 1; + } + /* don't take too much time in this loop... */ + cond_resched(); + } + chipsc &= ~(PCXHR_CHIPSC_DATA_CLK | PCXHR_CHIPSC_DATA_IN); + PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc); + /* wait 2 msec (time to boot the xilinx before any access) */ + msleep( PCXHR_WAIT_DEFAULT ); + return 0; +} + +/* + * send an executable file to the DSP + */ +static int pcxhr_download_dsp(struct pcxhr_mgr *mgr, const struct firmware *dsp) +{ + int err; + unsigned int i; + unsigned int len; + unsigned char *data; + unsigned char dummy; + /* check the length of boot image */ + snd_assert(dsp->size > 0, return -EINVAL); + snd_assert(dsp->size % 3 == 0, return -EINVAL); + snd_assert(dsp->data, return -EINVAL); + /* transfert data buffer from PC to DSP */ + for (i = 0; i < dsp->size; i += 3) { + data = dsp->data + i; + if (i == 0) { + /* test data header consistency */ + len = (unsigned int)((data[0]<<16) + (data[1]<<8) + data[2]); + snd_assert((len==0) || (dsp->size == (len+2)*3), return -EINVAL); + } + /* wait DSP ready for new transfer */ + err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_TRDY, + PCXHR_ISR_HI08_TRDY, PCXHR_TIMEOUT_DSP, &dummy); + if (err) { + snd_printk(KERN_ERR "dsp loading error at position %d\n", i); + return err; + } + /* send host data */ + PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, data[0]); + PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, data[1]); + PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, data[2]); + + /* don't take too much time in this loop... */ + cond_resched(); + } + /* give some time to boot the DSP */ + msleep(PCXHR_WAIT_DEFAULT); + return 0; +} + +/* + * load the eeprom image + */ +int pcxhr_load_eeprom_binary(struct pcxhr_mgr *mgr, const struct firmware *eeprom) +{ + int err; + unsigned char reg; + + /* init value of the ICR register */ + reg = PCXHR_ICR_HI08_RREQ | PCXHR_ICR_HI08_TREQ | PCXHR_ICR_HI08_HDRQ; + if (PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) & PCXHR_MBOX0_BOOT_HERE) { + /* no need to load the eeprom binary, but init the HI08 interface */ + PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg | PCXHR_ICR_HI08_INIT); + msleep(PCXHR_WAIT_DEFAULT); + PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg); + msleep(PCXHR_WAIT_DEFAULT); + snd_printdd("no need to load eeprom boot\n"); + return 0; + } + PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg); + + err = pcxhr_download_dsp(mgr, eeprom); + if (err) + return err; + /* wait for chk bit */ + return pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK, + PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, ®); +} + +/* + * load the boot image + */ +int pcxhr_load_boot_binary(struct pcxhr_mgr *mgr, const struct firmware *boot) +{ + int err; + unsigned int physaddr = mgr->hostport.addr; + unsigned char dummy; + + /* send the hostport address to the DSP (only the upper 24 bit !) */ + snd_assert((physaddr & 0xff) == 0, return -EINVAL); + PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX1, (physaddr >> 8)); + + err = pcxhr_send_it_dsp(mgr, PCXHR_IT_DOWNLOAD_BOOT, 0); + if (err) + return err; + /* clear hf5 bit */ + PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0, + PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) & ~PCXHR_MBOX0_HF5); + + err = pcxhr_download_dsp(mgr, boot); + if (err) + return err; + /* wait for hf5 bit */ + return pcxhr_check_reg_bit(mgr, PCXHR_PLX_MBOX0, PCXHR_MBOX0_HF5, + PCXHR_MBOX0_HF5, PCXHR_TIMEOUT_DSP, &dummy); +} + +/* + * load the final dsp image + */ +int pcxhr_load_dsp_binary(struct pcxhr_mgr *mgr, const struct firmware *dsp) +{ + int err; + unsigned char dummy; + err = pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_BOARD_FUNC, 0); + if (err) + return err; + err = pcxhr_send_it_dsp(mgr, PCXHR_IT_DOWNLOAD_DSP, 0); + if (err) + return err; + err = pcxhr_download_dsp(mgr, dsp); + if (err) + return err; + /* wait for chk bit */ + return pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK, + PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &dummy); +} + + +struct pcxhr_cmd_info { + u32 opcode; /* command word */ + u16 st_length; /* status length */ + u16 st_type; /* status type (RMH_SSIZE_XXX) */ +}; + +/* RMH status type */ +enum { + RMH_SSIZE_FIXED = 0, /* status size fix (st_length = 0..x) */ + RMH_SSIZE_ARG = 1, /* status size given in the LSB byte (used with st_length = 1) */ + RMH_SSIZE_MASK = 2, /* status size given in bitmask (used with st_length = 1) */ +}; + +/* + * Array of DSP commands + */ +static struct pcxhr_cmd_info pcxhr_dsp_cmds[] = { +[CMD_VERSION] = { 0x010000, 1, RMH_SSIZE_FIXED }, +[CMD_SUPPORTED] = { 0x020000, 4, RMH_SSIZE_FIXED }, +[CMD_TEST_IT] = { 0x040000, 1, RMH_SSIZE_FIXED }, +[CMD_SEND_IRQA] = { 0x070001, 0, RMH_SSIZE_FIXED }, +[CMD_ACCESS_IO_WRITE] = { 0x090000, 1, RMH_SSIZE_ARG }, +[CMD_ACCESS_IO_READ] = { 0x094000, 1, RMH_SSIZE_ARG }, +[CMD_ASYNC] = { 0x0a0000, 1, RMH_SSIZE_ARG }, +[CMD_MODIFY_CLOCK] = { 0x0d0000, 0, RMH_SSIZE_FIXED }, +[CMD_RESYNC_AUDIO_INPUTS] = { 0x0e0000, 0, RMH_SSIZE_FIXED }, +[CMD_GET_DSP_RESOURCES] = { 0x100000, 4, RMH_SSIZE_FIXED }, +[CMD_SET_TIMER_INTERRUPT] = { 0x110000, 0, RMH_SSIZE_FIXED }, +[CMD_RES_PIPE] = { 0x400000, 0, RMH_SSIZE_FIXED }, +[CMD_FREE_PIPE] = { 0x410000, 0, RMH_SSIZE_FIXED }, +[CMD_CONF_PIPE] = { 0x422101, 0, RMH_SSIZE_FIXED }, +[CMD_STOP_PIPE] = { 0x470004, 0, RMH_SSIZE_FIXED }, +[CMD_PIPE_SAMPLE_COUNT] = { 0x49a000, 2, RMH_SSIZE_FIXED }, +[CMD_CAN_START_PIPE] = { 0x4b0000, 1, RMH_SSIZE_FIXED }, +[CMD_START_STREAM] = { 0x802000, 0, RMH_SSIZE_FIXED }, +[CMD_STREAM_OUT_LEVEL_ADJUST] = { 0x822000, 0, RMH_SSIZE_FIXED }, +[CMD_STOP_STREAM] = { 0x832000, 0, RMH_SSIZE_FIXED }, +[CMD_UPDATE_R_BUFFERS] = { 0x840000, 0, RMH_SSIZE_FIXED }, +[CMD_FORMAT_STREAM_OUT] = { 0x860000, 0, RMH_SSIZE_FIXED }, +[CMD_FORMAT_STREAM_IN] = { 0x870000, 0, RMH_SSIZE_FIXED }, +[CMD_STREAM_SAMPLE_COUNT] = { 0x902000, 2, RMH_SSIZE_FIXED }, /* stat_len = nb_streams * 2 */ +[CMD_AUDIO_LEVEL_ADJUST] = { 0xc22000, 0, RMH_SSIZE_FIXED }, +}; + +#ifdef CONFIG_SND_DEBUG_DETECT +static char* cmd_names[] = { +[CMD_VERSION] = "CMD_VERSION", +[CMD_SUPPORTED] = "CMD_SUPPORTED", +[CMD_TEST_IT] = "CMD_TEST_IT", +[CMD_SEND_IRQA] = "CMD_SEND_IRQA", +[CMD_ACCESS_IO_WRITE] = "CMD_ACCESS_IO_WRITE", +[CMD_ACCESS_IO_READ] = "CMD_ACCESS_IO_READ", +[CMD_ASYNC] = "CMD_ASYNC", +[CMD_MODIFY_CLOCK] = "CMD_MODIFY_CLOCK", +[CMD_RESYNC_AUDIO_INPUTS] = "CMD_RESYNC_AUDIO_INPUTS", +[CMD_GET_DSP_RESOURCES] = "CMD_GET_DSP_RESOURCES", +[CMD_SET_TIMER_INTERRUPT] = "CMD_SET_TIMER_INTERRUPT", +[CMD_RES_PIPE] = "CMD_RES_PIPE", +[CMD_FREE_PIPE] = "CMD_FREE_PIPE", +[CMD_CONF_PIPE] = "CMD_CONF_PIPE", +[CMD_STOP_PIPE] = "CMD_STOP_PIPE", +[CMD_PIPE_SAMPLE_COUNT] = "CMD_PIPE_SAMPLE_COUNT", +[CMD_CAN_START_PIPE] = "CMD_CAN_START_PIPE", +[CMD_START_STREAM] = "CMD_START_STREAM", +[CMD_STREAM_OUT_LEVEL_ADJUST] = "CMD_STREAM_OUT_LEVEL_ADJUST", +[CMD_STOP_STREAM] = "CMD_STOP_STREAM", +[CMD_UPDATE_R_BUFFERS] = "CMD_UPDATE_R_BUFFERS", +[CMD_FORMAT_STREAM_OUT] = "CMD_FORMAT_STREAM_OUT", +[CMD_FORMAT_STREAM_IN] = "CMD_FORMAT_STREAM_IN", +[CMD_STREAM_SAMPLE_COUNT] = "CMD_STREAM_SAMPLE_COUNT", +[CMD_AUDIO_LEVEL_ADJUST] = "CMD_AUDIO_LEVEL_ADJUST", +}; +#endif + + +static int pcxhr_read_rmh_status(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh) +{ + int err; + int i; + u32 data; + u32 size_mask; + unsigned char reg; + int max_stat_len; + + if (rmh->stat_len < PCXHR_SIZE_MAX_STATUS) + max_stat_len = PCXHR_SIZE_MAX_STATUS; + else max_stat_len = rmh->stat_len; + + for (i = 0; i < rmh->stat_len; i++) { + /* wait for receiver full */ + err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_RXDF, + PCXHR_ISR_HI08_RXDF, PCXHR_TIMEOUT_DSP, ®); + if (err) { + snd_printk(KERN_ERR "ERROR RMH stat: ISR:RXDF=1 (ISR = %x; i=%d )\n", + reg, i); + return err; + } + /* read data */ + data = PCXHR_INPB(mgr, PCXHR_DSP_TXH) << 16; + data |= PCXHR_INPB(mgr, PCXHR_DSP_TXM) << 8; + data |= PCXHR_INPB(mgr, PCXHR_DSP_TXL); + + /* need to update rmh->stat_len on the fly ?? */ + if (i==0) { + if (rmh->dsp_stat != RMH_SSIZE_FIXED) { + if (rmh->dsp_stat == RMH_SSIZE_ARG) { + rmh->stat_len = (u16)(data & 0x0000ff) + 1; + data &= 0xffff00; + } else { + /* rmh->dsp_stat == RMH_SSIZE_MASK */ + rmh->stat_len = 1; + size_mask = data; + while (size_mask) { + if (size_mask & 1) + rmh->stat_len++; + size_mask >>= 1; + } + } + } + } +#ifdef CONFIG_SND_DEBUG_DETECT + if (rmh->cmd_idx < CMD_LAST_INDEX) + snd_printdd(" stat[%d]=%x\n", i, data); +#endif + if (i < max_stat_len) + rmh->stat[i] = data; + } + if (rmh->stat_len > max_stat_len) { + snd_printdd("PCXHR : rmh->stat_len=%x too big\n", rmh->stat_len); + rmh->stat_len = max_stat_len; + } + return 0; +} + +static int pcxhr_send_msg_nolock(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh) +{ + int err; + int i; + u32 data; + unsigned char reg; + + snd_assert(rmh->cmd_len<PCXHR_SIZE_MAX_CMD, return -EINVAL); + err = pcxhr_send_it_dsp(mgr, PCXHR_IT_MESSAGE, 1); + if (err) { + snd_printk(KERN_ERR "pcxhr_send_message : ED_DSP_CRASHED\n"); + return err; + } + /* wait for chk bit */ + err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK, + PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, ®); + if (err) + return err; + /* reset irq chk */ + err = pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_CHK, 1); + if (err) + return err; + /* wait for chk bit == 0*/ + err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK, 0, + PCXHR_TIMEOUT_DSP, ®); + if (err) + return err; + + data = rmh->cmd[0]; + + if (rmh->cmd_len > 1) + data |= 0x008000; /* MASK_MORE_THAN_1_WORD_COMMAND */ + else + data &= 0xff7fff; /* MASK_1_WORD_COMMAND */ +#ifdef CONFIG_SND_DEBUG_DETECT + if (rmh->cmd_idx < CMD_LAST_INDEX) + snd_printdd("MSG cmd[0]=%x (%s)\n", data, cmd_names[rmh->cmd_idx]); +#endif + + err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_TRDY, + PCXHR_ISR_HI08_TRDY, PCXHR_TIMEOUT_DSP, ®); + if (err) + return err; + PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF); + PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF); + PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF)); + + if (rmh->cmd_len > 1) { + /* send length */ + data = rmh->cmd_len - 1; + err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_TRDY, + PCXHR_ISR_HI08_TRDY, PCXHR_TIMEOUT_DSP, ®); + if (err) + return err; + PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF); + PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF); + PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF)); + + for (i=1; i < rmh->cmd_len; i++) { + /* send other words */ + data = rmh->cmd[i]; +#ifdef CONFIG_SND_DEBUG_DETECT + if (rmh->cmd_idx < CMD_LAST_INDEX) + snd_printdd(" cmd[%d]=%x\n", i, data); +#endif + err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, + PCXHR_ISR_HI08_TRDY, + PCXHR_ISR_HI08_TRDY, + PCXHR_TIMEOUT_DSP, ®); + if (err) + return err; + PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF); + PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF); + PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF)); + } + } + /* wait for chk bit */ + err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK, + PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, ®); + if (err) + return err; + /* test status ISR */ + if (reg & PCXHR_ISR_HI08_ERR) { + /* ERROR, wait for receiver full */ + err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_RXDF, + PCXHR_ISR_HI08_RXDF, PCXHR_TIMEOUT_DSP, ®); + if (err) { + snd_printk(KERN_ERR "ERROR RMH: ISR:RXDF=1 (ISR = %x)\n", reg); + return err; + } + /* read error code */ + data = PCXHR_INPB(mgr, PCXHR_DSP_TXH) << 16; + data |= PCXHR_INPB(mgr, PCXHR_DSP_TXM) << 8; + data |= PCXHR_INPB(mgr, PCXHR_DSP_TXL); + snd_printk(KERN_ERR "ERROR RMH(%d): 0x%x\n", rmh->cmd_idx, data); + err = -EINVAL; + } else { + /* read the response data */ + err = pcxhr_read_rmh_status(mgr, rmh); + } + /* reset semaphore */ + if (pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_SEMAPHORE, 1) < 0) + return -EIO; + return err; +} + + +/** + * pcxhr_init_rmh - initialize the RMH instance + * @rmh: the rmh pointer to be initialized + * @cmd: the rmh command to be set + */ +void pcxhr_init_rmh(struct pcxhr_rmh *rmh, int cmd) +{ + snd_assert(cmd < CMD_LAST_INDEX, return); + rmh->cmd[0] = pcxhr_dsp_cmds[cmd].opcode; + rmh->cmd_len = 1; + rmh->stat_len = pcxhr_dsp_cmds[cmd].st_length; + rmh->dsp_stat = pcxhr_dsp_cmds[cmd].st_type; + rmh->cmd_idx = cmd; +} + + +void pcxhr_set_pipe_cmd_params(struct pcxhr_rmh *rmh, int capture, + unsigned int param1, unsigned int param2, + unsigned int param3) +{ + snd_assert(param1 <= MASK_FIRST_FIELD); + if (capture) + rmh->cmd[0] |= 0x800; /* COMMAND_RECORD_MASK */ + if (param1) + rmh->cmd[0] |= (param1 << FIELD_SIZE); + if (param2) { + snd_assert(param2 <= MASK_FIRST_FIELD); + rmh->cmd[0] |= param2; + } + if(param3) { + snd_assert(param3 <= MASK_DSP_WORD); + rmh->cmd[1] = param3; + rmh->cmd_len = 2; + } +} + +/* + * pcxhr_send_msg - send a DSP message with spinlock + * @rmh: the rmh record to send and receive + * + * returns 0 if successful, or a negative error code. + */ +int pcxhr_send_msg(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh) +{ + unsigned long flags; + int err; + spin_lock_irqsave(&mgr->msg_lock, flags); + err = pcxhr_send_msg_nolock(mgr, rmh); + spin_unlock_irqrestore(&mgr->msg_lock, flags); + return err; +} + +static inline int pcxhr_pipes_running(struct pcxhr_mgr *mgr) +{ + int start_mask = PCXHR_INPL(mgr, PCXHR_PLX_MBOX2); + /* least segnificant 12 bits are the pipe states for the playback audios */ + /* next 12 bits are the pipe states for the capture audios + * (PCXHR_PIPE_STATE_CAPTURE_OFFSET) + */ + start_mask &= 0xffffff; + snd_printdd("CMD_PIPE_STATE MBOX2=0x%06x\n", start_mask); + return start_mask; +} + +#define PCXHR_PIPE_STATE_CAPTURE_OFFSET 12 +#define MAX_WAIT_FOR_DSP 20 + +static int pcxhr_prepair_pipe_start(struct pcxhr_mgr *mgr, int audio_mask, int *retry) +{ + struct pcxhr_rmh rmh; + int err; + int audio = 0; + + *retry = 0; + while (audio_mask) { + if (audio_mask & 1) { + pcxhr_init_rmh(&rmh, CMD_CAN_START_PIPE); + if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) { + /* can start playback pipe */ + pcxhr_set_pipe_cmd_params(&rmh, 0, audio, 0, 0); + } else { + /* can start capture pipe */ + pcxhr_set_pipe_cmd_params(&rmh, 1, audio - + PCXHR_PIPE_STATE_CAPTURE_OFFSET, + 0, 0); + } + err = pcxhr_send_msg(mgr, &rmh); + if (err) { + snd_printk(KERN_ERR + "error pipe start (CMD_CAN_START_PIPE) err=%x!\n", + err); + return err; + } + /* if the pipe couldn't be prepaired for start, retry it later */ + if (rmh.stat[0] == 0) + *retry |= (1<<audio); + } + audio_mask>>=1; + audio++; + } + return 0; +} + +static int pcxhr_stop_pipes(struct pcxhr_mgr *mgr, int audio_mask) +{ + struct pcxhr_rmh rmh; + int err; + int audio = 0; + + while (audio_mask) { + if (audio_mask & 1) { + pcxhr_init_rmh(&rmh, CMD_STOP_PIPE); + if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) { + /* stop playback pipe */ + pcxhr_set_pipe_cmd_params(&rmh, 0, audio, 0, 0); + } else { + /* stop capture pipe */ + pcxhr_set_pipe_cmd_params(&rmh, 1, audio - + PCXHR_PIPE_STATE_CAPTURE_OFFSET, + 0, 0); + } + err = pcxhr_send_msg(mgr, &rmh); + if (err) { + snd_printk(KERN_ERR + "error pipe stop (CMD_STOP_PIPE) err=%x!\n", + err); + return err; + } + } + audio_mask>>=1; + audio++; + } + return 0; +} + +static int pcxhr_toggle_pipes(struct pcxhr_mgr *mgr, int audio_mask) +{ + struct pcxhr_rmh rmh; + int err; + int audio = 0; + + while (audio_mask) { + if (audio_mask & 1) { + pcxhr_init_rmh(&rmh, CMD_CONF_PIPE); + if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) + pcxhr_set_pipe_cmd_params(&rmh, 0, 0, 0, 1 << audio); + else + pcxhr_set_pipe_cmd_params(&rmh, 1, 0, 0, + 1 << (audio - PCXHR_PIPE_STATE_CAPTURE_OFFSET)); + err = pcxhr_send_msg(mgr, &rmh); + if (err) { + snd_printk(KERN_ERR + "error pipe start (CMD_CONF_PIPE) err=%x!\n", + err); + return err; + } + } + audio_mask>>=1; + audio++; + } + /* now fire the interrupt on the card */ + pcxhr_init_rmh(&rmh, CMD_SEND_IRQA); + err = pcxhr_send_msg(mgr, &rmh); + if (err) { + snd_printk(KERN_ERR "error pipe start (CMD_SEND_IRQA) err=%x!\n", err ); + return err; + } + return 0; +} + + + +int pcxhr_set_pipe_state(struct pcxhr_mgr *mgr, int playback_mask, int capture_mask, int start) +{ + int state, i, err; + int audio_mask; + +#ifdef CONFIG_SND_DEBUG_DETECT + struct timeval my_tv1, my_tv2; + do_gettimeofday(&my_tv1); +#endif + audio_mask = (playback_mask | (capture_mask << PCXHR_PIPE_STATE_CAPTURE_OFFSET)); + /* current pipe state (playback + record) */ + state = pcxhr_pipes_running(mgr); + snd_printdd("pcxhr_set_pipe_state %s (mask %x current %x)\n", + start ? "START" : "STOP", audio_mask, state); + if (start) { + audio_mask &= ~state; /* start only pipes that are not yet started */ + state = audio_mask; + for (i = 0; i < MAX_WAIT_FOR_DSP; i++) { + err = pcxhr_prepair_pipe_start(mgr, state, &state); + if (err) + return err; + if (state == 0) + break; /* success, all pipes prepaired for start */ + mdelay(1); /* otherwise wait 1 millisecond and retry */ + } + } else { + audio_mask &= state; /* stop only pipes that are started */ + } + if (audio_mask == 0) + return 0; + + err = pcxhr_toggle_pipes(mgr, audio_mask); + if (err) + return err; + + i = 0; + while (1) { + state = pcxhr_pipes_running(mgr); + /* have all pipes the new state ? */ + if ((state & audio_mask) == (start ? audio_mask : 0)) + break; + if (++i >= MAX_WAIT_FOR_DSP * 100) { + snd_printk(KERN_ERR "error pipe start/stop (ED_NO_RESPONSE_AT_IRQA)\n"); + return -EBUSY; + } + udelay(10); /* wait 10 microseconds */ + } + if (!start) { + err = pcxhr_stop_pipes(mgr, audio_mask); + if (err) + return err; + } +#ifdef CONFIG_SND_DEBUG_DETECT + do_gettimeofday(&my_tv2); + snd_printdd("***SET PIPE STATE*** TIME = %ld (err = %x)\n", + my_tv2.tv_usec - my_tv1.tv_usec, err); +#endif + return 0; +} + +int pcxhr_write_io_num_reg_cont(struct pcxhr_mgr *mgr, unsigned int mask, + unsigned int value, int *changed) +{ + struct pcxhr_rmh rmh; + unsigned long flags; + int err; + + spin_lock_irqsave(&mgr->msg_lock, flags); + if ((mgr->io_num_reg_cont & mask) == value) { + snd_printdd("IO_NUM_REG_CONT mask %x already is set to %x\n", mask, value); + if (changed) + *changed = 0; + spin_unlock_irqrestore(&mgr->msg_lock, flags); + return 0; /* already programmed */ + } + pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE); + rmh.cmd[0] |= IO_NUM_REG_CONT; + rmh.cmd[1] = mask; + rmh.cmd[2] = value; + rmh.cmd_len = 3; + err = pcxhr_send_msg_nolock(mgr, &rmh); + if (err == 0) { + mgr->io_num_reg_cont &= ~mask; + mgr->io_num_reg_cont |= value; + if (changed) + *changed = 1; + } + spin_unlock_irqrestore(&mgr->msg_lock, flags); + return err; +} + +#define PCXHR_IRQ_TIMER 0x000300 +#define PCXHR_IRQ_FREQ_CHANGE 0x000800 +#define PCXHR_IRQ_TIME_CODE 0x001000 +#define PCXHR_IRQ_NOTIFY 0x002000 +#define PCXHR_IRQ_ASYNC 0x008000 +#define PCXHR_IRQ_MASK 0x00bb00 +#define PCXHR_FATAL_DSP_ERR 0xff0000 + +enum pcxhr_async_err_src { + PCXHR_ERR_PIPE, + PCXHR_ERR_STREAM, + PCXHR_ERR_AUDIO +}; + +static int pcxhr_handle_async_err(struct pcxhr_mgr *mgr, u32 err, + enum pcxhr_async_err_src err_src, int pipe, + int is_capture) +{ +#ifdef CONFIG_SND_DEBUG_DETECT + static char* err_src_name[] = { + [PCXHR_ERR_PIPE] = "Pipe", + [PCXHR_ERR_STREAM] = "Stream", + [PCXHR_ERR_AUDIO] = "Audio" + }; +#endif + if (err & 0xfff) + err &= 0xfff; + else + err = ((err >> 12) & 0xfff); + if (!err) + return 0; + snd_printdd("CMD_ASYNC : Error %s %s Pipe %d err=%x\n", err_src_name[err_src], + is_capture ? "Record" : "Play", pipe, err); + if (err == 0xe01) + mgr->async_err_stream_xrun++; + else if (err == 0xe10) + mgr->async_err_pipe_xrun++; + else + mgr->async_err_other_last = (int)err; + return 1; +} + + +void pcxhr_msg_tasklet(unsigned long arg) +{ + struct pcxhr_mgr *mgr = (struct pcxhr_mgr *)(arg); + struct pcxhr_rmh *prmh = mgr->prmh; + int err; + int i, j; + + if (mgr->src_it_dsp & PCXHR_IRQ_FREQ_CHANGE) + snd_printdd("TASKLET : PCXHR_IRQ_FREQ_CHANGE event occured\n"); + if (mgr->src_it_dsp & PCXHR_IRQ_TIME_CODE) + snd_printdd("TASKLET : PCXHR_IRQ_TIME_CODE event occured\n"); + if (mgr->src_it_dsp & PCXHR_IRQ_NOTIFY) + snd_printdd("TASKLET : PCXHR_IRQ_NOTIFY event occured\n"); + if (mgr->src_it_dsp & PCXHR_IRQ_ASYNC) { + snd_printdd("TASKLET : PCXHR_IRQ_ASYNC event occured\n"); + + pcxhr_init_rmh(prmh, CMD_ASYNC); + prmh->cmd[0] |= 1; /* add SEL_ASYNC_EVENTS */ + /* this is the only one extra long response command */ + prmh->stat_len = PCXHR_SIZE_MAX_LONG_STATUS; + err = pcxhr_send_msg(mgr, prmh); + if (err) + snd_printk(KERN_ERR "ERROR pcxhr_msg_tasklet=%x;\n", err); + i = 1; + while (i < prmh->stat_len) { + int nb_audio = (prmh->stat[i] >> FIELD_SIZE) & MASK_FIRST_FIELD; + int nb_stream = (prmh->stat[i] >> (2*FIELD_SIZE)) & MASK_FIRST_FIELD; + int pipe = prmh->stat[i] & MASK_FIRST_FIELD; + int is_capture = prmh->stat[i] & 0x400000; + u32 err; + + if (prmh->stat[i] & 0x800000) { /* if BIT_END */ + snd_printdd("TASKLET : End%sPipe %d\n", + is_capture ? "Record" : "Play", pipe); + } + i++; + err = prmh->stat[i] ? prmh->stat[i] : prmh->stat[i+1]; + if (err) + pcxhr_handle_async_err(mgr, err, PCXHR_ERR_PIPE, + pipe, is_capture); + i += 2; + for (j = 0; j < nb_stream; j++) { + err = prmh->stat[i] ? prmh->stat[i] : prmh->stat[i+1]; + if (err) + pcxhr_handle_async_err(mgr, err, PCXHR_ERR_STREAM, + pipe, is_capture); + i += 2; + } + for (j = 0; j < nb_audio; j++) { + err = prmh->stat[i] ? prmh->stat[i] : prmh->stat[i+1]; + if (err) + pcxhr_handle_async_err(mgr, err, PCXHR_ERR_AUDIO, + pipe, is_capture); + i += 2; + } + } + } +} + +static u_int64_t pcxhr_stream_read_position(struct pcxhr_mgr *mgr, + struct pcxhr_stream *stream) +{ + u_int64_t hw_sample_count; + struct pcxhr_rmh rmh; + int err, stream_mask; + + stream_mask = stream->pipe->is_capture ? 1 : 1<<stream->substream->number; + + /* get sample count for one stream */ + pcxhr_init_rmh(&rmh, CMD_STREAM_SAMPLE_COUNT); + pcxhr_set_pipe_cmd_params(&rmh, stream->pipe->is_capture, + stream->pipe->first_audio, 0, stream_mask); + /* rmh.stat_len = 2; */ /* 2 resp data for each stream of the pipe */ + + err = pcxhr_send_msg(mgr, &rmh); + if (err) + return 0; + + hw_sample_count = ((u_int64_t)rmh.stat[0]) << 24; + hw_sample_count += (u_int64_t)rmh.stat[1]; + + snd_printdd("stream %c%d : abs samples real(%ld) timer(%ld)\n", + stream->pipe->is_capture ? 'C':'P', stream->substream->number, + (long unsigned int)hw_sample_count, + (long unsigned int)(stream->timer_abs_periods + + stream->timer_period_frag + PCXHR_GRANULARITY)); + + return hw_sample_count; +} + +static void pcxhr_update_timer_pos(struct pcxhr_mgr *mgr, + struct pcxhr_stream *stream, int samples_to_add) +{ + if (stream->substream && (stream->status == PCXHR_STREAM_STATUS_RUNNING)) { + u_int64_t new_sample_count; + int elapsed = 0; + int hardware_read = 0; + struct snd_pcm_runtime *runtime = stream->substream->runtime; + + if (samples_to_add < 0) { + stream->timer_is_synced = 0; + /* add default if no hardware_read possible */ + samples_to_add = PCXHR_GRANULARITY; + } + + if (!stream->timer_is_synced) { + if (stream->timer_abs_periods != 0 || + stream->timer_period_frag + PCXHR_GRANULARITY >= + runtime->period_size) { + new_sample_count = pcxhr_stream_read_position(mgr, stream); + hardware_read = 1; + if (new_sample_count >= PCXHR_GRANULARITY_MIN) { + /* sub security offset because of jitter and + * finer granularity of dsp time (MBOX4) + */ + new_sample_count -= PCXHR_GRANULARITY_MIN; + stream->timer_is_synced = 1; + } + } + } + if (!hardware_read) { + /* if we didn't try to sync the position, increment it + * by PCXHR_GRANULARITY every timer interrupt + */ + new_sample_count = stream->timer_abs_periods + + stream->timer_period_frag + samples_to_add; + } + while (1) { + u_int64_t new_elapse_pos = stream->timer_abs_periods + + runtime->period_size; + if (new_elapse_pos > new_sample_count) + break; + elapsed = 1; + stream->timer_buf_periods++; + if (stream->timer_buf_periods >= runtime->periods) + stream->timer_buf_periods = 0; + stream->timer_abs_periods = new_elapse_pos; + } + if (new_sample_count >= stream->timer_abs_periods) + stream->timer_period_frag = (u_int32_t)(new_sample_count - + stream->timer_abs_periods); + else + snd_printk(KERN_ERR "ERROR new_sample_count too small ??? %lx\n", + (long unsigned int)new_sample_count); + + if (elapsed) { + spin_unlock(&mgr->lock); + snd_pcm_period_elapsed(stream->substream); + spin_lock(&mgr->lock); + } + } +} + + +irqreturn_t pcxhr_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct pcxhr_mgr *mgr = dev_id; + unsigned int reg; + int i, j; + struct snd_pcxhr *chip; + + spin_lock(&mgr->lock); + + reg = PCXHR_INPL(mgr, PCXHR_PLX_IRQCS); + if (! (reg & PCXHR_IRQCS_ACTIVE_PCIDB)) { + spin_unlock(&mgr->lock); + return IRQ_NONE; /* this device did not cause the interrupt */ + } + + /* clear interrupt */ + reg = PCXHR_INPL(mgr, PCXHR_PLX_L2PCIDB); + PCXHR_OUTPL(mgr, PCXHR_PLX_L2PCIDB, reg); + + /* timer irq occured */ + if (reg & PCXHR_IRQ_TIMER) { + int timer_toggle = reg & PCXHR_IRQ_TIMER; + /* is a 24 bit counter */ + int dsp_time_new = PCXHR_INPL(mgr, PCXHR_PLX_MBOX4) & PCXHR_DSP_TIME_MASK; + int dsp_time_diff = dsp_time_new - mgr->dsp_time_last; + + if (dsp_time_diff < 0 && mgr->dsp_time_last != PCXHR_DSP_TIME_INVALID) { + snd_printdd("ERROR DSP TIME old(%d) new(%d) -> " + "resynchronize all streams\n", + mgr->dsp_time_last, dsp_time_new); + mgr->dsp_time_err++; + } +#ifdef CONFIG_SND_DEBUG_DETECT + if (dsp_time_diff == 0) + snd_printdd("ERROR DSP TIME NO DIFF time(%d)\n", dsp_time_new); + else if (dsp_time_diff >= (2*PCXHR_GRANULARITY)) + snd_printdd("ERROR DSP TIME TOO BIG old(%d) add(%d)\n", + mgr->dsp_time_last, dsp_time_new - mgr->dsp_time_last); +#endif + mgr->dsp_time_last = dsp_time_new; + + if (timer_toggle == mgr->timer_toggle) + snd_printk(KERN_ERR "ERROR TIMER TOGGLE\n"); + mgr->timer_toggle = timer_toggle; + + reg &= ~PCXHR_IRQ_TIMER; + for (i = 0; i < mgr->num_cards; i++) { + chip = mgr->chip[i]; + for (j = 0; j < chip->nb_streams_capt; j++) + pcxhr_update_timer_pos(mgr, &chip->capture_stream[j], + dsp_time_diff); + } + for (i = 0; i < mgr->num_cards; i++) { + chip = mgr->chip[i]; + for (j = 0; j < chip->nb_streams_play; j++) + pcxhr_update_timer_pos(mgr, &chip->playback_stream[j], + dsp_time_diff); + } + } + /* other irq's handled in the tasklet */ + if (reg & PCXHR_IRQ_MASK) { + + /* as we didn't request any notifications, some kind of xrun error + * will probably occured + */ + /* better resynchronize all streams next interrupt : */ + mgr->dsp_time_last = PCXHR_DSP_TIME_INVALID; + + mgr->src_it_dsp = reg; + tasklet_hi_schedule(&mgr->msg_taskq); + } +#ifdef CONFIG_SND_DEBUG_DETECT + if (reg & PCXHR_FATAL_DSP_ERR) + snd_printdd("FATAL DSP ERROR : %x\n", reg); +#endif + spin_unlock(&mgr->lock); + return IRQ_HANDLED; /* this device caused the interrupt */ +} |