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root/sound/pci/pcxhr/pcxhr_hwdep.c

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DEFINITIONS

This source file includes following definitions.
  1. pcxhr_init_board
  2. pcxhr_reset_board
  3. pcxhr_dsp_allocate_pipe
  4. pcxhr_dsp_free_pipe
  5. pcxhr_config_pipes
  6. pcxhr_start_pipes
  7. pcxhr_dsp_load
  8. pcxhr_setup_firmware
  9. pcxhr_hwdep_dsp_status
  10. pcxhr_hwdep_dsp_load
  11. pcxhr_hwdep_open
  12. pcxhr_hwdep_release
  13. pcxhr_setup_firmware

/*
 * Driver for Digigram pcxhr compatible soundcards
 *
 * hwdep device manager
 *
 * 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 <linux/interrupt.h>
#include <linux/vmalloc.h>
#include <linux/firmware.h>
#include <linux/pci.h>
#include <asm/io.h>
#include <sound/core.h>
#include <sound/hwdep.h>
#include "pcxhr.h"
#include "pcxhr_mixer.h"
#include "pcxhr_hwdep.h"
#include "pcxhr_core.h"


#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
#if !defined(CONFIG_USE_PCXHRLOADER) && !defined(CONFIG_SND_PCXHR) /* built-in kernel */
#define SND_PCXHR_FW_LOADER     /* use the standard firmware loader */
#endif
#endif


/*
 * get basic information and init pcxhr card
 */

static int pcxhr_init_board(struct pcxhr_mgr *mgr)
{
        int err;
        struct pcxhr_rmh rmh;
        int card_streams;

        /* calc the number of all streams used */
        if (mgr->mono_capture)
                card_streams = mgr->capture_chips * 2;
        else
                card_streams = mgr->capture_chips;
        card_streams += mgr->playback_chips * PCXHR_PLAYBACK_STREAMS;

        /* enable interrupts */
        pcxhr_enable_dsp(mgr);

        pcxhr_init_rmh(&rmh, CMD_SUPPORTED);
        err = pcxhr_send_msg(mgr, &rmh);
        if (err)
                return err;
        /* test 8 or 12 phys out */
        if ((rmh.stat[0] & MASK_FIRST_FIELD) != mgr->playback_chips * 2)
                return -EINVAL;
        /* test 8 or 2 phys in */
        if (((rmh.stat[0] >> (2 * FIELD_SIZE)) & MASK_FIRST_FIELD) !=
            mgr->capture_chips * 2)
                return -EINVAL;
        /* test max nb substream per board */
        if ((rmh.stat[1] & 0x5F) < card_streams)
                return -EINVAL;
        /* test max nb substream per pipe */
        if (((rmh.stat[1] >> 7) & 0x5F) < PCXHR_PLAYBACK_STREAMS)
                return -EINVAL;

        pcxhr_init_rmh(&rmh, CMD_VERSION);
        /* firmware num for DSP */
        rmh.cmd[0] |= mgr->firmware_num;
        /* transfer granularity in samples (should be multiple of 48) */
        rmh.cmd[1] = (1<<23) + PCXHR_GRANULARITY;
        rmh.cmd_len = 2;
        err = pcxhr_send_msg(mgr, &rmh);
        if (err)
                return err;
        snd_printdd("PCXHR DSP version is %d.%d.%d\n",
                    (rmh.stat[0]>>16)&0xff, (rmh.stat[0]>>8)&0xff, rmh.stat[0]&0xff);
        mgr->dsp_version = rmh.stat[0];

        /* get options */
        pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_READ);
        rmh.cmd[0] |= IO_NUM_REG_STATUS;
        rmh.cmd[1]  = REG_STATUS_OPTIONS;
        rmh.cmd_len = 2;
        err = pcxhr_send_msg(mgr, &rmh);
        if (err)
                return err;

        if ((rmh.stat[1] & REG_STATUS_OPT_DAUGHTER_MASK) == REG_STATUS_OPT_ANALOG_BOARD)
                mgr->board_has_analog = 1;      /* analog addon board available */
        else
                /* analog addon board not available -> no support for instance */
                return -EINVAL; 

        /* unmute inputs */
        err = pcxhr_write_io_num_reg_cont(mgr, REG_CONT_UNMUTE_INPUTS,
                                          REG_CONT_UNMUTE_INPUTS, NULL);
        if (err)
                return err;
        /* unmute outputs */
        pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_READ); /* a write to IO_NUM_REG_MUTE_OUT mutes! */
        rmh.cmd[0] |= IO_NUM_REG_MUTE_OUT;
        err = pcxhr_send_msg(mgr, &rmh);
        return err;
}

void pcxhr_reset_board(struct pcxhr_mgr *mgr)
{
        struct pcxhr_rmh rmh;

        if (mgr->dsp_loaded & (1 << PCXHR_FIRMWARE_DSP_MAIN_INDEX)) {
                /* mute outputs */
                /* a read to IO_NUM_REG_MUTE_OUT register unmutes! */
                pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);
                rmh.cmd[0] |= IO_NUM_REG_MUTE_OUT;
                pcxhr_send_msg(mgr, &rmh);
                /* mute inputs */
                pcxhr_write_io_num_reg_cont(mgr, REG_CONT_UNMUTE_INPUTS, 0, NULL);
        }
        /* reset pcxhr dsp */
        if (mgr->dsp_loaded & ( 1 << PCXHR_FIRMWARE_DSP_EPRM_INDEX))
                pcxhr_reset_dsp(mgr);
        /* reset second xilinx */
        if (mgr->dsp_loaded & ( 1 << PCXHR_FIRMWARE_XLX_COM_INDEX))
                pcxhr_reset_xilinx_com(mgr);
        return;
}


/*
 *  allocate a playback/capture pipe (pcmp0/pcmc0)
 */
static int pcxhr_dsp_allocate_pipe( struct pcxhr_mgr *mgr, struct pcxhr_pipe *pipe,
                                    int is_capture, int pin)
{
        int stream_count, audio_count;
        int err;
        struct pcxhr_rmh rmh;

        if (is_capture) {
                stream_count = 1;
                if (mgr->mono_capture)
                        audio_count = 1;
                else
                        audio_count = 2;
        } else {
                stream_count = PCXHR_PLAYBACK_STREAMS;
                audio_count = 2;        /* always stereo */
        }
        snd_printdd("snd_add_ref_pipe pin(%d) pcm%c0\n", pin, is_capture ? 'c' : 'p');
        pipe->is_capture = is_capture;
        pipe->first_audio = pin;
        /* define pipe (P_PCM_ONLY_MASK (0x020000) is not necessary) */
        pcxhr_init_rmh(&rmh, CMD_RES_PIPE);
        pcxhr_set_pipe_cmd_params(&rmh, is_capture, pin, audio_count, stream_count); 
        err = pcxhr_send_msg(mgr, &rmh);
        if (err < 0) {
                snd_printk(KERN_ERR "error pipe allocation (CMD_RES_PIPE) err=%x!\n", err );
                return err;
        }
        pipe->status = PCXHR_PIPE_DEFINED;

        return 0;
}

/*
 *  free playback/capture pipe (pcmp0/pcmc0)
 */
#if 0
static int pcxhr_dsp_free_pipe( struct pcxhr_mgr *mgr, struct pcxhr_pipe *pipe)
{
        struct pcxhr_rmh rmh;
        int capture_mask = 0;
        int playback_mask = 0;
        int err = 0;

        if (pipe->is_capture)
                capture_mask  = (1 << pipe->first_audio);
        else
                playback_mask = (1 << pipe->first_audio);

        /* stop one pipe */
        err = pcxhr_set_pipe_state(mgr, playback_mask, capture_mask, 0);
        if (err < 0)
                snd_printk(KERN_ERR "error stopping pipe!\n");
        /* release the pipe */
        pcxhr_init_rmh(&rmh, CMD_FREE_PIPE);
        pcxhr_set_pipe_cmd_params(&rmh, pipe->is_capture, pipe->first_audio, 0, 0);
        err = pcxhr_send_msg(mgr, &rmh);
        if (err < 0)
                snd_printk(KERN_ERR "error pipe release (CMD_FREE_PIPE) err(%x)\n", err);
        pipe->status = PCXHR_PIPE_UNDEFINED;
        return err;
}
#endif


static int pcxhr_config_pipes(struct pcxhr_mgr *mgr)
{
        int err, i, j;
        struct snd_pcxhr *chip;
        struct pcxhr_pipe *pipe;

        /* allocate the pipes on the dsp */
        for (i = 0; i < mgr->num_cards; i++) {
                chip = mgr->chip[i];
                if (chip->nb_streams_play) {
                        pipe = &chip->playback_pipe;
                        err = pcxhr_dsp_allocate_pipe( mgr, pipe, 0, i*2);
                        if (err)
                                return err;
                        for(j = 0; j < chip->nb_streams_play; j++)
                                chip->playback_stream[j].pipe = pipe;
                }
                for (j = 0; j < chip->nb_streams_capt; j++) {
                        pipe = &chip->capture_pipe[j];
                        err = pcxhr_dsp_allocate_pipe(mgr, pipe, 1, i*2 + j);
                        if (err)
                                return err;
                        chip->capture_stream[j].pipe = pipe;
                }
        }
        return 0;
}

static int pcxhr_start_pipes(struct pcxhr_mgr *mgr)
{
        int i, j;
        struct snd_pcxhr *chip;
        int playback_mask = 0;
        int capture_mask = 0;

        /* start all the pipes on the dsp */
        for (i = 0; i < mgr->num_cards; i++) {
                chip = mgr->chip[i];
                if (chip->nb_streams_play)
                        playback_mask |= (1 << chip->playback_pipe.first_audio);
                for (j = 0; j < chip->nb_streams_capt; j++)
                        capture_mask |= (1 << chip->capture_pipe[j].first_audio);
        }
        return pcxhr_set_pipe_state(mgr, playback_mask, capture_mask, 1);
}


static int pcxhr_dsp_load(struct pcxhr_mgr *mgr, int index, const struct firmware *dsp)
{
        int err, card_index;

        snd_printdd("loading dsp [%d] size = %Zd\n", index, dsp->size);

        switch (index) {
        case PCXHR_FIRMWARE_XLX_INT_INDEX:
                pcxhr_reset_xilinx_com(mgr);
                return pcxhr_load_xilinx_binary(mgr, dsp, 0);

        case PCXHR_FIRMWARE_XLX_COM_INDEX:
                pcxhr_reset_xilinx_com(mgr);
                return pcxhr_load_xilinx_binary(mgr, dsp, 1);

        case PCXHR_FIRMWARE_DSP_EPRM_INDEX:
                pcxhr_reset_dsp(mgr);
                return pcxhr_load_eeprom_binary(mgr, dsp);

        case PCXHR_FIRMWARE_DSP_BOOT_INDEX:
                return pcxhr_load_boot_binary(mgr, dsp);

        case PCXHR_FIRMWARE_DSP_MAIN_INDEX:
                err = pcxhr_load_dsp_binary(mgr, dsp);
                if (err)
                        return err;
                break;  /* continue with first init */
        default:
                snd_printk(KERN_ERR "wrong file index\n");
                return -EFAULT;
        } /* end of switch file index*/

        /* first communication with embedded */
        err = pcxhr_init_board(mgr);
        if (err < 0) {
                snd_printk(KERN_ERR "pcxhr could not be set up\n");
                return err;
        }
        err = pcxhr_config_pipes(mgr);
        if (err < 0) {
                snd_printk(KERN_ERR "pcxhr pipes 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++) {
                struct snd_pcxhr *chip = mgr->chip[card_index];

                if ((err = pcxhr_create_pcm(chip)) < 0)
                        return err;

                if (card_index == 0) {
                        if ((err = pcxhr_create_mixer(chip->mgr)) < 0)
                                return err;
                }
                if ((err = snd_card_register(chip->card)) < 0)
                        return err;
        }
        err = pcxhr_start_pipes(mgr);
        if (err < 0) {
                snd_printk(KERN_ERR "pcxhr pipes could not be started\n");
                return err;
        }
        snd_printdd("pcxhr firmware downloaded and successfully set up\n");

        return 0;
}

/*
 * fw loader entry
 */
#ifdef SND_PCXHR_FW_LOADER

int pcxhr_setup_firmware(struct pcxhr_mgr *mgr)
{
        static char *fw_files[5] = {
                "xi_1_882.dat",
                "xc_1_882.dat",
                "e321_512.e56",
                "b321_512.b56",
                "d321_512.d56"
        };
        char path[32];

        const struct firmware *fw_entry;
        int i, err;

        for (i = 0; i < ARRAY_SIZE(fw_files); i++) {
                sprintf(path, "pcxhr/%s", fw_files[i]);
                if (request_firmware(&fw_entry, path, &mgr->pci->dev)) {
                        snd_printk(KERN_ERR "pcxhr: can't load firmware %s\n", path);
                        return -ENOENT;
                }
                /* fake hwdep dsp record */
                err = pcxhr_dsp_load(mgr, i, fw_entry);
                release_firmware(fw_entry);
                if (err < 0)
                        return err;
                mgr->dsp_loaded |= 1 << i;
        }
        return 0;
}

MODULE_FIRMWARE("pcxhr/xi_1_882.dat");
MODULE_FIRMWARE("pcxhr/xc_1_882.dat");
MODULE_FIRMWARE("pcxhr/e321_512.e56");
MODULE_FIRMWARE("pcxhr/b321_512.b56");
MODULE_FIRMWARE("pcxhr/d321_512.d56");

#else /* old style firmware loading */

/* pcxhr hwdep interface id string */
#define PCXHR_HWDEP_ID       "pcxhr loader"


static int pcxhr_hwdep_dsp_status(struct snd_hwdep *hw,
                                  struct snd_hwdep_dsp_status *info)
{
        strcpy(info->id, "pcxhr");
        info->num_dsps = PCXHR_FIRMWARE_FILES_MAX_INDEX;

        if (hw->dsp_loaded & (1 << PCXHR_FIRMWARE_DSP_MAIN_INDEX))
                info->chip_ready = 1;

        info->version = PCXHR_DRIVER_VERSION;
        return 0;
}

static int pcxhr_hwdep_dsp_load(struct snd_hwdep *hw,
                                struct snd_hwdep_dsp_image *dsp)
{
        struct pcxhr_mgr *mgr = hw->private_data;
        int err;
        struct firmware fw;

        fw.size = dsp->length;
        fw.data = vmalloc(fw.size);
        if (! fw.data) {
                snd_printk(KERN_ERR "pcxhr: cannot allocate dsp image (%lu bytes)\n",
                           (unsigned long)fw.size);
                return -ENOMEM;
        }
        if (copy_from_user((void *)fw.data, dsp->image, dsp->length)) {
                vfree(fw.data);
                return -EFAULT;
        }
        err = pcxhr_dsp_load(mgr, dsp->index, &fw);
        vfree(fw.data);
        if (err < 0)
                return err;
        mgr->dsp_loaded |= 1 << dsp->index;
        return 0;
}

static int pcxhr_hwdep_open(struct snd_hwdep *hw, struct file *file)
{
        return 0;
}

static int pcxhr_hwdep_release(struct snd_hwdep *hw, struct file *file)
{
        return 0;
}

int pcxhr_setup_firmware(struct pcxhr_mgr *mgr)
{
        int err;
        struct snd_hwdep *hw;

        /* only create hwdep interface for first cardX (see "index" module parameter)*/
        if ((err = snd_hwdep_new(mgr->chip[0]->card, PCXHR_HWDEP_ID, 0, &hw)) < 0)
                return err;

        hw->iface = SNDRV_HWDEP_IFACE_PCXHR;
        hw->private_data = mgr;
        hw->ops.open = pcxhr_hwdep_open;
        hw->ops.release = pcxhr_hwdep_release;
        hw->ops.dsp_status = pcxhr_hwdep_dsp_status;
        hw->ops.dsp_load = pcxhr_hwdep_dsp_load;
        hw->exclusive = 1;
        mgr->dsp_loaded = 0;
        sprintf(hw->name, PCXHR_HWDEP_ID);

        if ((err = snd_card_register(mgr->chip[0]->card)) < 0)
                return err;
        return 0;
}

#endif /* SND_PCXHR_FW_LOADER */

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