1 files changed, 647 insertions, 0 deletions

diff --git a/sound/pci/mixart/mixart_hwdep.c b/sound/pci/mixart/mixart_hwdep.c
new file mode 100644
index 000000000000..edd1599fe45e
--- /dev/null
+++ b/sound/pci/mixart/mixart_hwdep.c
@@ -0,0 +1,647 @@
+/*
+ * Driver for Digigram miXart soundcards
+ *
+ * DSP firmware management
+ *
+ * Copyright (c) 2003 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/interrupt.h>
+#include <linux/pci.h>
+#include <linux/firmware.h>
+#include <asm/io.h>
+#include <sound/core.h>
+#include "mixart.h"
+#include "mixart_mixer.h"
+#include "mixart_core.h"
+#include "mixart_hwdep.h"
+
+
+/**
+ * wait for a value on a peudo register, exit with a timeout
+ *
+ * @param mgr pointer to miXart manager structure
+ * @param offset unsigned pseudo_register base + offset of value
+ * @param value value
+ * @param timeout timeout in centisenconds
+ */
+static int mixart_wait_nice_for_register_value(mixart_mgr_t *mgr, u32 offset, int is_egal, u32 value, unsigned long timeout)
+{
+        unsigned long end_time = jiffies + (timeout * HZ / 100);
+        u32 read;
+
+        do {    /* we may take too long time in this loop.
+                 * so give controls back to kernel if needed.
+                 */
+                cond_resched();
+
+                read = readl_be( MIXART_MEM( mgr, offset ));
+                if(is_egal) {
+                        if(read == value) return 0;
+                }
+                else { /* wait for different value */
+                        if(read != value) return 0;
+                }
+        } while ( time_after_eq(end_time, jiffies) );
+
+        return -EBUSY;
+}
+
+
+/*
+  structures needed to upload elf code packets 
+ */
+typedef struct snd_mixart_elf32_ehdr snd_mixart_elf32_ehdr_t;
+
+struct snd_mixart_elf32_ehdr {
+        u8      e_ident[16];
+        u16     e_type;
+        u16     e_machine;
+        u32     e_version;
+        u32     e_entry;
+        u32     e_phoff;
+        u32     e_shoff;
+        u32     e_flags;
+        u16     e_ehsize;
+        u16     e_phentsize;
+        u16     e_phnum;
+        u16     e_shentsize;
+        u16     e_shnum;
+        u16     e_shstrndx;
+};
+
+typedef struct snd_mixart_elf32_phdr snd_mixart_elf32_phdr_t;
+
+struct snd_mixart_elf32_phdr {
+        u32     p_type;
+        u32     p_offset;
+        u32     p_vaddr;
+        u32     p_paddr;
+        u32     p_filesz;
+        u32     p_memsz;
+        u32     p_flags;
+        u32     p_align;
+};
+
+static int mixart_load_elf(mixart_mgr_t *mgr, const struct firmware *dsp )
+{
+        char                    elf32_magic_number[4] = {0x7f,'E','L','F'};
+        snd_mixart_elf32_ehdr_t *elf_header;
+        int                     i;
+
+        elf_header = (snd_mixart_elf32_ehdr_t *)dsp->data;
+        for( i=0; i<4; i++ )
+                if ( elf32_magic_number[i] != elf_header->e_ident[i] )
+                        return -EINVAL;
+
+        if( elf_header->e_phoff != 0 ) {
+                snd_mixart_elf32_phdr_t     elf_programheader;
+
+                for( i=0; i < be16_to_cpu(elf_header->e_phnum); i++ ) {
+                        u32 pos = be32_to_cpu(elf_header->e_phoff) + (u32)(i * be16_to_cpu(elf_header->e_phentsize));
+
+                        memcpy( &elf_programheader, dsp->data + pos, sizeof(elf_programheader) );
+
+                        if(elf_programheader.p_type != 0) {
+                                if( elf_programheader.p_filesz != 0 ) {
+                                        memcpy_toio( MIXART_MEM( mgr, be32_to_cpu(elf_programheader.p_vaddr)),
+                                                     dsp->data + be32_to_cpu( elf_programheader.p_offset ),
+                                                     be32_to_cpu( elf_programheader.p_filesz ));
+                                }
+                        }
+                }
+        }
+        return 0;
+}
+
+/*
+ * get basic information and init miXart
+ */
+
+/* audio IDs for request to the board */
+#define MIXART_FIRST_ANA_AUDIO_ID       0
+#define MIXART_FIRST_DIG_AUDIO_ID       8
+
+static int mixart_enum_connectors(mixart_mgr_t *mgr)
+{
+        u32 k;
+        int err;
+        mixart_msg_t request;
+        mixart_enum_connector_resp_t *connector;
+        mixart_audio_info_req_t  *audio_info_req;
+        mixart_audio_info_resp_t *audio_info;
+
+        connector = kmalloc(sizeof(*connector), GFP_KERNEL);
+        audio_info_req = kmalloc(sizeof(*audio_info_req), GFP_KERNEL);
+        audio_info = kmalloc(sizeof(*audio_info), GFP_KERNEL);
+        if (! connector || ! audio_info_req || ! audio_info) {
+                err = -ENOMEM;
+                goto __error;
+        }
+
+        audio_info_req->line_max_level = MIXART_FLOAT_P_22_0_TO_HEX;
+        audio_info_req->micro_max_level = MIXART_FLOAT_M_20_0_TO_HEX;
+        audio_info_req->cd_max_level = MIXART_FLOAT____0_0_TO_HEX;
+
+        request.message_id = MSG_SYSTEM_ENUM_PLAY_CONNECTOR;
+        request.uid = (mixart_uid_t){0,0};  /* board num = 0 */
+        request.data = NULL;
+        request.size = 0;
+
+        err = snd_mixart_send_msg(mgr, &request, sizeof(*connector), connector);
+        if((err < 0) || (connector->error_code) || (connector->uid_count > MIXART_MAX_PHYS_CONNECTORS)) {
+                snd_printk(KERN_ERR "error MSG_SYSTEM_ENUM_PLAY_CONNECTOR\n");
+                err = -EINVAL;
+                goto __error;
+        }
+
+        for(k=0; k < connector->uid_count; k++) {
+                mixart_pipe_t* pipe;
+
+                if(k < MIXART_FIRST_DIG_AUDIO_ID) {
+                        pipe = &mgr->chip[k/2]->pipe_out_ana;
+                } else {
+                        pipe = &mgr->chip[(k-MIXART_FIRST_DIG_AUDIO_ID)/2]->pipe_out_dig;
+                }
+                if(k & 1) {
+                        pipe->uid_right_connector = connector->uid[k];   /* odd */
+                } else {
+                        pipe->uid_left_connector = connector->uid[k];    /* even */
+                }
+
+                /* snd_printk(KERN_DEBUG "playback connector[%d].object_id = %x\n", k, connector->uid[k].object_id); */
+
+                /* TODO: really need send_msg MSG_CONNECTOR_GET_AUDIO_INFO for each connector ? perhaps for analog level caps ? */
+                request.message_id = MSG_CONNECTOR_GET_AUDIO_INFO;
+                request.uid = connector->uid[k];
+                request.data = audio_info_req;
+                request.size = sizeof(*audio_info_req);
+
+                err = snd_mixart_send_msg(mgr, &request, sizeof(*audio_info), audio_info);
+                if( err < 0 ) {
+                        snd_printk(KERN_ERR "error MSG_CONNECTOR_GET_AUDIO_INFO\n");
+                        goto __error;
+                }
+                /*snd_printk(KERN_DEBUG "play  analog_info.analog_level_present = %x\n", audio_info->info.analog_info.analog_level_present);*/
+        }
+
+        request.message_id = MSG_SYSTEM_ENUM_RECORD_CONNECTOR;
+        request.uid = (mixart_uid_t){0,0};  /* board num = 0 */
+        request.data = NULL;
+        request.size = 0;
+
+        err = snd_mixart_send_msg(mgr, &request, sizeof(*connector), connector);
+        if((err < 0) || (connector->error_code) || (connector->uid_count > MIXART_MAX_PHYS_CONNECTORS)) {
+                snd_printk(KERN_ERR "error MSG_SYSTEM_ENUM_RECORD_CONNECTOR\n");
+                err = -EINVAL;
+                goto __error;
+        }
+
+        for(k=0; k < connector->uid_count; k++) {
+                mixart_pipe_t* pipe;
+
+                if(k < MIXART_FIRST_DIG_AUDIO_ID) {
+                        pipe = &mgr->chip[k/2]->pipe_in_ana;
+                } else {
+                        pipe = &mgr->chip[(k-MIXART_FIRST_DIG_AUDIO_ID)/2]->pipe_in_dig;
+                }
+                if(k & 1) {
+                        pipe->uid_right_connector = connector->uid[k];   /* odd */
+                } else {
+                        pipe->uid_left_connector = connector->uid[k];    /* even */
+                }
+
+                /* snd_printk(KERN_DEBUG "capture connector[%d].object_id = %x\n", k, connector->uid[k].object_id); */
+
+                /* TODO: really need send_msg MSG_CONNECTOR_GET_AUDIO_INFO for each connector ? perhaps for analog level caps ? */
+                request.message_id = MSG_CONNECTOR_GET_AUDIO_INFO;
+                request.uid = connector->uid[k];
+                request.data = audio_info_req;
+                request.size = sizeof(*audio_info_req);
+
+                err = snd_mixart_send_msg(mgr, &request, sizeof(*audio_info), audio_info);
+                if( err < 0 ) {
+                        snd_printk(KERN_ERR "error MSG_CONNECTOR_GET_AUDIO_INFO\n");
+                        goto __error;
+                }
+                /*snd_printk(KERN_DEBUG "rec  analog_info.analog_level_present = %x\n", audio_info->info.analog_info.analog_level_present);*/
+        }
+        err = 0;
+
+ __error:
+        kfree(connector);
+        kfree(audio_info_req);
+        kfree(audio_info);
+
+        return err;
+}
+
+static int mixart_enum_physio(mixart_mgr_t *mgr)
+{
+        u32 k;
+        int err;
+        mixart_msg_t request;
+        mixart_uid_t get_console_mgr;
+        mixart_return_uid_t console_mgr;
+        mixart_uid_enumeration_t phys_io;
+
+        /* get the uid for the console manager */
+        get_console_mgr.object_id = 0;
+        get_console_mgr.desc = MSG_CONSOLE_MANAGER | 0; /* cardindex = 0 */
+
+        request.message_id = MSG_CONSOLE_GET_CLOCK_UID;
+        request.uid = get_console_mgr;
+        request.data = &get_console_mgr;
+        request.size = sizeof(get_console_mgr);
+
+        err = snd_mixart_send_msg(mgr, &request, sizeof(console_mgr), &console_mgr);
+
+        if( (err < 0) || (console_mgr.error_code != 0) ) {
+                snd_printk(KERN_DEBUG "error MSG_CONSOLE_GET_CLOCK_UID : err=%x\n", console_mgr.error_code);
+                return -EINVAL;
+        }
+
+        /* used later for clock issues ! */
+        mgr->uid_console_manager = console_mgr.uid;
+
+        request.message_id = MSG_SYSTEM_ENUM_PHYSICAL_IO;
+        request.uid = (mixart_uid_t){0,0};
+        request.data = &console_mgr.uid;
+        request.size = sizeof(console_mgr.uid);
+
+        err = snd_mixart_send_msg(mgr, &request, sizeof(phys_io), &phys_io);
+        if( (err < 0) || ( phys_io.error_code != 0 ) ) {
+                snd_printk(KERN_ERR "error MSG_SYSTEM_ENUM_PHYSICAL_IO err(%x) error_code(%x)\n", err, phys_io.error_code );
+                return -EINVAL;
+        }
+
+        snd_assert(phys_io.nb_uid >= (MIXART_MAX_CARDS * 2),  return -EINVAL); /* min 2 phys io per card (analog in + analog out) */
+
+        for(k=0; k<mgr->num_cards; k++) {
+                mgr->chip[k]->uid_in_analog_physio = phys_io.uid[k];
+                mgr->chip[k]->uid_out_analog_physio = phys_io.uid[phys_io.nb_uid/2 + k]; 
+        }
+
+        return 0;
+}
+
+
+static int mixart_first_init(mixart_mgr_t *mgr)
+{
+        u32 k;
+        int err;
+        mixart_msg_t request;
+
+        if((err = mixart_enum_connectors(mgr)) < 0) return err;
+
+        if((err = mixart_enum_physio(mgr)) < 0) return err;
+
+        /* send a synchro command to card (necessary to do this before first MSG_STREAM_START_STREAM_GRP_PACKET) */
+        /* though why not here */
+        request.message_id = MSG_SYSTEM_SEND_SYNCHRO_CMD;
+        request.uid = (mixart_uid_t){0,0};
+        request.data = NULL;
+        request.size = 0;
+        /* this command has no data. response is a 32 bit status */
+        err = snd_mixart_send_msg(mgr, &request, sizeof(k), &k);
+        if( (err < 0) || (k != 0) ) {
+                snd_printk(KERN_ERR "error MSG_SYSTEM_SEND_SYNCHRO_CMD\n");
+                return err == 0 ? -EINVAL : err;
+        }
+
+        return 0;
+}
+
+
+/* firmware base addresses (when hard coded) */
+#define MIXART_MOTHERBOARD_XLX_BASE_ADDRESS   0x00600000
+
+static int mixart_dsp_load(mixart_mgr_t* mgr, int index, const struct firmware *dsp)
+{
+        int           err, card_index;
+        u32           status_xilinx, status_elf, status_daught;
+        u32           val;
+
+        /* read motherboard xilinx status */
+        status_xilinx = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));
+        /* read elf status */
+        status_elf = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));
+        /* read daughterboard xilinx status */
+        status_daught = readl_be( MIXART_MEM( mgr,MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));
+
+        /* motherboard xilinx status 5 will say that the board is performing a reset */
+        if( status_xilinx == 5 ) {
+                snd_printk( KERN_ERR "miXart is resetting !\n");
+                return -EAGAIN; /* try again later */
+        }
+
+        switch (index)   {
+        case MIXART_MOTHERBOARD_XLX_INDEX:
+
+                /* xilinx already loaded ? */ 
+                if( status_xilinx == 4 ) {
+                        snd_printk( KERN_DEBUG "xilinx is already loaded !\n");
+                        return 0;
+                }
+                /* the status should be 0 == "idle" */
+                if( status_xilinx != 0 ) {
+                        snd_printk( KERN_ERR "xilinx load error ! status = %d\n", status_xilinx);
+                        return -EIO; /* modprob -r may help ? */
+                }
+
+                /* check xilinx validity */
+                snd_assert(((u32*)(dsp->data))[0]==0xFFFFFFFF, return -EINVAL);
+                snd_assert(dsp->size % 4 == 0, return -EINVAL);
+
+                /* set xilinx status to copying */
+                writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));
+
+                /* setup xilinx base address */
+                writel_be( MIXART_MOTHERBOARD_XLX_BASE_ADDRESS, MIXART_MEM( mgr,MIXART_PSEUDOREG_MXLX_BASE_ADDR_OFFSET ));
+                /* setup code size for xilinx file */
+                writel_be( dsp->size, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_SIZE_OFFSET ));
+
+                /* copy xilinx code */
+                memcpy_toio(  MIXART_MEM( mgr, MIXART_MOTHERBOARD_XLX_BASE_ADDRESS),  dsp->data,  dsp->size);
+    
+                /* set xilinx status to copy finished */
+                writel_be( 2, MIXART_MEM( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET ));
+
+                /* return, because no further processing needed */
+                return 0;
+
+        case MIXART_MOTHERBOARD_ELF_INDEX:
+
+                if( status_elf == 4 ) {
+                        snd_printk( KERN_DEBUG "elf file already loaded !\n");
+                        return 0;
+                }
+
+                /* the status should be 0 == "idle" */
+                if( status_elf != 0 ) {
+                        snd_printk( KERN_ERR "elf load error ! status = %d\n", status_elf);
+                        return -EIO; /* modprob -r may help ? */
+                }
+
+                /* wait for xilinx status == 4 */
+                err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_MXLX_STATUS_OFFSET, 1, 4, 500); /* 5sec */
+                if (err < 0) {
+                        snd_printk( KERN_ERR "xilinx was not loaded or could not be started\n");
+                        return err;
+                }
+
+                /* init some data on the card */
+                writel_be( 0, MIXART_MEM( mgr, MIXART_PSEUDOREG_BOARDNUMBER ) ); /* set miXart boardnumber to 0 */
+                writel_be( 0, MIXART_MEM( mgr, MIXART_FLOWTABLE_PTR ) );         /* reset pointer to flow table on miXart */
+
+                /* set elf status to copying */
+                writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));
+
+                /* process the copying of the elf packets */
+                err = mixart_load_elf( mgr, dsp );
+                if (err < 0) return err;
+
+                /* set elf status to copy finished */
+                writel_be( 2, MIXART_MEM( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET ));
+
+                /* wait for elf status == 4 */
+                err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_ELF_STATUS_OFFSET, 1, 4, 300); /* 3sec */
+                if (err < 0) {
+                        snd_printk( KERN_ERR "elf could not be started\n");
+                        return err;
+                }
+
+                /* miXart waits at this point on the pointer to the flow table */
+                writel_be( (u32)mgr->flowinfo.addr, MIXART_MEM( mgr, MIXART_FLOWTABLE_PTR ) ); /* give pointer of flow table to miXart */
+
+                return 0;  /* return, another xilinx file has to be loaded before */
+
+        case MIXART_AESEBUBOARD_XLX_INDEX:
+        default:
+
+                /* elf and xilinx should be loaded */
+                if( (status_elf != 4) || (status_xilinx != 4) ) {
+                        printk( KERN_ERR "xilinx or elf not successfully loaded\n");
+                        return -EIO; /* modprob -r may help ? */
+                }
+
+                /* wait for daughter detection != 0 */
+                err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DBRD_PRESENCE_OFFSET, 0, 0, 30); /* 300msec */
+                if (err < 0) {
+                        snd_printk( KERN_ERR "error starting elf file\n");
+                        return err;
+                }
+
+                /* the board type can now be retrieved */
+                mgr->board_type = (DAUGHTER_TYPE_MASK & readl_be( MIXART_MEM( mgr, MIXART_PSEUDOREG_DBRD_TYPE_OFFSET)));
+
+                if (mgr->board_type == MIXART_DAUGHTER_TYPE_NONE)
+                        break;  /* no daughter board; the file does not have to be loaded, continue after the switch */
+
+                /* only if aesebu daughter board presence (elf code must run)  */ 
+                if (mgr->board_type != MIXART_DAUGHTER_TYPE_AES )
+                        return -EINVAL;
+
+                /* daughter should be idle */
+                if( status_daught != 0 ) {
+                        printk( KERN_ERR "daughter load error ! status = %d\n", status_daught);
+                        return -EIO; /* modprob -r may help ? */
+                }
+ 
+                /* check daughterboard xilinx validity */
+                snd_assert(((u32*)(dsp->data))[0]==0xFFFFFFFF, return -EINVAL);
+                snd_assert(dsp->size % 4 == 0, return -EINVAL);
+
+                /* inform mixart about the size of the file */
+                writel_be( dsp->size, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_SIZE_OFFSET ));
+
+                /* set daughterboard status to 1 */
+                writel_be( 1, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));
+
+                /* wait for status == 2 */
+                err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET, 1, 2, 30); /* 300msec */
+                if (err < 0) {
+                        snd_printk( KERN_ERR "daughter board load error\n");
+                        return err;
+                }
+
+                /* get the address where to write the file */
+                val = readl_be( MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_BASE_ADDR_OFFSET ));
+                snd_assert(val != 0, return -EINVAL);
+
+                /* copy daughterboard xilinx code */
+                memcpy_toio(  MIXART_MEM( mgr, val),  dsp->data,  dsp->size);
+
+                /* set daughterboard status to 4 */
+                writel_be( 4, MIXART_MEM( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET ));
+
+                /* continue with init */
+                break;
+        } /* end of switch file index*/
+
+        /* wait for daughter status == 3 */
+        err = mixart_wait_nice_for_register_value( mgr, MIXART_PSEUDOREG_DXLX_STATUS_OFFSET, 1, 3, 300); /* 3sec */
+        if (err < 0) {
+                snd_printk( KERN_ERR "daughter board could not be initialised\n");
+                return err;
+        }
+
+        /* init mailbox (communication with embedded) */
+        snd_mixart_init_mailbox(mgr);
+
+        /* first communication with embedded */
+        err = mixart_first_init(mgr);
+        if (err < 0) {
+                snd_printk( KERN_ERR "miXart could not be set up\n");
+                return err;
+        }
+
+        /* create devices and mixer in accordance with HW options*/
+        for (card_index = 0; card_index < mgr->num_cards; card_index++) {
+                mixart_t *chip = mgr->chip[card_index];
+
+                if ((err = snd_mixart_create_pcm(chip)) < 0)
+                        return err;
+
+                if (card_index == 0) {
+                        if ((err = snd_mixart_create_mixer(chip->mgr)) < 0)
+                                return err;
+                }
+
+                if ((err = snd_card_register(chip->card)) < 0)
+                        return err;
+        };
+
+        snd_printdd("miXart firmware downloaded and successfully set up\n");
+
+        return 0;
+}
+
+
+#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
+#if !defined(CONFIG_USE_MIXARTLOADER) && !defined(CONFIG_SND_MIXART) /* built-in kernel */
+#define SND_MIXART_FW_LOADER    /* use the standard firmware loader */
+#endif
+#endif
+
+#ifdef SND_MIXART_FW_LOADER
+
+int snd_mixart_setup_firmware(mixart_mgr_t *mgr)
+{
+        static char *fw_files[3] = {
+                "miXart8.xlx", "miXart8.elf", "miXart8AES.xlx"
+        };
+        char path[32];
+
+        const struct firmware *fw_entry;
+        int i, err;
+
+        for (i = 0; i < 3; i++) {
+                sprintf(path, "mixart/%s", fw_files[i]);
+                if (request_firmware(&fw_entry, path, &mgr->pci->dev)) {
+                        snd_printk(KERN_ERR "miXart: can't load firmware %s\n", path);
+                        return -ENOENT;
+                }
+                /* fake hwdep dsp record */
+                err = mixart_dsp_load(mgr, i, fw_entry);
+                release_firmware(fw_entry);
+                if (err < 0)
+                        return err;
+                mgr->dsp_loaded |= 1 << i;
+        }
+        return 0;
+}
+
+
+#else /* old style firmware loading */
+
+/* miXart hwdep interface id string */
+#define SND_MIXART_HWDEP_ID       "miXart Loader"
+
+static int mixart_hwdep_open(snd_hwdep_t *hw, struct file *file)
+{
+        return 0;
+}
+
+static int mixart_hwdep_release(snd_hwdep_t *hw, struct file *file)
+{
+        return 0;
+}
+
+static int mixart_hwdep_dsp_status(snd_hwdep_t *hw, snd_hwdep_dsp_status_t *info)
+{
+        mixart_mgr_t *mgr = hw->private_data;
+
+        strcpy(info->id, "miXart");
+        info->num_dsps = MIXART_HARDW_FILES_MAX_INDEX;
+
+        if (mgr->dsp_loaded & (1 <<  MIXART_MOTHERBOARD_ELF_INDEX))
+                info->chip_ready = 1;
+
+        info->version = MIXART_DRIVER_VERSION;
+        return 0;
+}
+
+static int mixart_hwdep_dsp_load(snd_hwdep_t *hw, snd_hwdep_dsp_image_t *dsp)
+{
+        mixart_mgr_t* mgr = hw->private_data;
+        struct firmware fw;
+        int err;
+
+        fw.size = dsp->length;
+        fw.data = vmalloc(dsp->length);
+        if (! fw.data) {
+                snd_printk(KERN_ERR "miXart: cannot allocate image size %d\n",
+                           (int)dsp->length);
+                return -ENOMEM;
+        }
+        if (copy_from_user(fw.data, dsp->image, dsp->length)) {
+                vfree(fw.data);
+                return -EFAULT;
+        }
+        err = mixart_dsp_load(mgr, dsp->index, &fw);
+        vfree(fw.data);
+        if (err < 0)
+                return err;
+        mgr->dsp_loaded |= 1 << dsp->index;
+        return err;
+}
+
+int snd_mixart_setup_firmware(mixart_mgr_t *mgr)
+{
+        int err;
+        snd_hwdep_t *hw;
+
+        /* only create hwdep interface for first cardX (see "index" module parameter)*/
+        if ((err = snd_hwdep_new(mgr->chip[0]->card, SND_MIXART_HWDEP_ID, 0, &hw)) < 0)
+                return err;
+
+        hw->iface = SNDRV_HWDEP_IFACE_MIXART;
+        hw->private_data = mgr;
+        hw->ops.open = mixart_hwdep_open;
+        hw->ops.release = mixart_hwdep_release;
+        hw->ops.dsp_status = mixart_hwdep_dsp_status;
+        hw->ops.dsp_load = mixart_hwdep_dsp_load;
+        hw->exclusive = 1;
+        sprintf(hw->name,  SND_MIXART_HWDEP_ID);
+        mgr->dsp_loaded = 0;
+
+        return snd_card_register(mgr->chip[0]->card);
+}
+
+#endif /* SND_MIXART_FW_LOADER */