/**************************************************************************** Copyright Echo Digital Audio Corporation (c) 1998 - 2004 All rights reserved www.echoaudio.com This file is part of Echo Digital Audio's generic driver library. Echo Digital Audio's generic driver library 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. 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. ************************************************************************* Translation from C++ and adaptation for use in ALSA-Driver were made by Giuliano Pochini ****************************************************************************/ static int set_professional_spdif(struct echoaudio *chip, char prof); static int update_flags(struct echoaudio *chip); static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) { int err; if (snd_BUG_ON((subdevice_id & 0xfff0) != GINA20)) return -ENODEV; if ((err = init_dsp_comm_page(chip))) { dev_err(chip->card->dev, "init_hw - could not initialize DSP comm page\n"); return err; } chip->device_id = device_id; chip->subdevice_id = subdevice_id; chip->bad_board = true; chip->dsp_code_to_load = FW_GINA20_DSP; chip->spdif_status = GD_SPDIF_STATUS_UNDEF; chip->clock_state = GD_CLOCK_UNDEF; /* Since this card has no ASIC, mark it as loaded so everything works OK */ chip->asic_loaded = true; chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF; if ((err = load_firmware(chip)) < 0) return err; chip->bad_board = false; return err; } static int set_mixer_defaults(struct echoaudio *chip) { chip->professional_spdif = false; return init_line_levels(chip); } static u32 detect_input_clocks(const struct echoaudio *chip) { u32 clocks_from_dsp, clock_bits; /* Map the DSP clock detect bits to the generic driver clock detect bits */ clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); clock_bits = ECHO_CLOCK_BIT_INTERNAL; if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF) clock_bits |= ECHO_CLOCK_BIT_SPDIF; return clock_bits; } /* The Gina20 has no ASIC. Just do nothing */ static int load_asic(struct echoaudio *chip) { return 0; } static int set_sample_rate(struct echoaudio *chip, u32 rate) { u8 clock_state, spdif_status; if (wait_handshake(chip)) return -EIO; switch (rate) { case 44100: clock_state = GD_CLOCK_44; spdif_status = GD_SPDIF_STATUS_44; break; case 48000: clock_state = GD_CLOCK_48; spdif_status = GD_SPDIF_STATUS_48; break; default: clock_state = GD_CLOCK_NOCHANGE; spdif_status = GD_SPDIF_STATUS_NOCHANGE; break; } if (chip->clock_state == clock_state) clock_state = GD_CLOCK_NOCHANGE; if (spdif_status == chip->spdif_status) spdif_status = GD_SPDIF_STATUS_NOCHANGE; chip->comm_page->sample_rate = cpu_to_le32(rate); chip->comm_page->gd_clock_state = clock_state; chip->comm_page->gd_spdif_status = spdif_status; chip->comm_page->gd_resampler_state = 3; /* magic number - should always be 3 */ /* Save the new audio state if it changed */ if (clock_state != GD_CLOCK_NOCHANGE) chip->clock_state = clock_state; if (spdif_status != GD_SPDIF_STATUS_NOCHANGE) chip->spdif_status = spdif_status; chip->sample_rate = rate; clear_handshake(chip); return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); } static int set_input_clock(struct echoaudio *chip, u16 clock) { switch (clock) { case ECHO_CLOCK_INTERNAL: /* Reset the audio state to unknown (just in case) */ chip->clock_state = GD_CLOCK_UNDEF; chip->spdif_status = GD_SPDIF_STATUS_UNDEF; set_sample_rate(chip, chip->sample_rate); chip->input_clock = clock; break; case ECHO_CLOCK_SPDIF: chip->comm_page->gd_clock_state = GD_CLOCK_SPDIFIN; chip->comm_page->gd_spdif_status = GD_SPDIF_STATUS_NOCHANGE; clear_handshake(chip); send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); chip->clock_state = GD_CLOCK_SPDIFIN; chip->input_clock = clock; break; default: return -EINVAL; } return 0; } /* Set input bus gain (one unit is 0.5dB !) */ static int set_input_gain(struct echoaudio *chip, u16 input, int gain) { if (snd_BUG_ON(input >= num_busses_in(chip))) return -EINVAL; if (wait_handshake(chip)) return -EIO; chip->input_gain[input] = gain; gain += GL20_INPUT_GAIN_MAGIC_NUMBER; chip->comm_page->line_in_level[input] = gain; return 0; } /* Tell the DSP to reread the flags from the comm page */ static int update_flags(struct echoaudio *chip) { if (wait_handshake(chip)) return -EIO; clear_handshake(chip); return send_vector(chip, DSP_VC_UPDATE_FLAGS); } static int set_professional_spdif(struct echoaudio *chip, char prof) { if (prof) chip->comm_page->flags |= cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); else chip->comm_page->flags &= ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF); chip->professional_spdif = prof; return update_flags(chip); } href='/cgit.cgi/linux/net-next.git/commit/sound/aoa/fabrics?id=5d0e7705774dd412a465896d08d59a81a345c1e4'>5d0e7705774dd412a465896d08d59a81a345c1e4 (diff)parent047487241ff59374fded8c477f21453681f5995c (diff)
Merge branch 'sparc64-non-resumable-user-error-recovery'
Liam R. Howlett says: ==================== sparc64: Recover from userspace non-resumable PIO & MEM errors A non-resumable error from userspace is able to cause a kernel panic or trap loop due to the setup and handling of the queued traps once in the kernel. This patch series addresses both of these issues. The queues are fixed by simply zeroing the memory before use. PIO errors from userspace will result in a SIGBUS being sent to the user process. The MEM errors form userspace will result in a SIGKILL and also cause the offending pages to be claimed so they are no longer used in future tasks. SIGKILL is used to ensure that the process does not try to coredump and result in an attempt to read the memory again from within kernel space. Although there is a HV call to scrub the memory (mem_scrub), there is no easy way to guarantee that the real memory address(es) are not used by other tasks. Clearing the error with mem_scrub would zero the memory and cause the other processes to proceed with bad data. The handling of other non-resumable errors remain unchanged and will cause a panic. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'sound/aoa/fabrics')