/**************************************************************************** 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); } '>a0615a16f7d0ceb5804d295203c302d496d8ee91 (diff)
powerpc/mm: Fix spurrious segfaults on radix with autonuma
When autonuma (Automatic NUMA balancing) marks a PTE inaccessible it clears all the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/net/irda')