/* aica.h * Header file for ALSA driver for * Sega Dreamcast Yamaha AICA sound * Copyright Adrian McMenamin * * 2006 * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 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 * */ /* SPU memory and register constants etc */ #define G2_FIFO 0xa05f688c #define SPU_MEMORY_BASE 0xA0800000 #define ARM_RESET_REGISTER 0xA0702C00 #define SPU_REGISTER_BASE 0xA0700000 /* AICA channels stuff */ #define AICA_CONTROL_POINT 0xA0810000 #define AICA_CONTROL_CHANNEL_SAMPLE_NUMBER 0xA0810008 #define AICA_CHANNEL0_CONTROL_OFFSET 0x10004 /* Command values */ #define AICA_CMD_KICK 0x80000000 #define AICA_CMD_NONE 0 #define AICA_CMD_START 1 #define AICA_CMD_STOP 2 #define AICA_CMD_VOL 3 /* Sound modes */ #define SM_8BIT 1 #define SM_16BIT 0 #define SM_ADPCM 2 /* Buffer and period size */ #define AICA_BUFFER_SIZE 0x8000 #define AICA_PERIOD_SIZE 0x800 #define AICA_PERIOD_NUMBER 16 #define AICA_CHANNEL0_OFFSET 0x11000 #define AICA_CHANNEL1_OFFSET 0x21000 #define CHANNEL_OFFSET 0x10000 #define AICA_DMA_CHANNEL 5 #define AICA_DMA_MODE 5 #define SND_AICA_DRIVER "AICA" struct aica_channel { uint32_t cmd; /* Command ID */ uint32_t pos; /* Sample position */ uint32_t length; /* Sample length */ uint32_t freq; /* Frequency */ uint32_t vol; /* Volume 0-255 */ uint32_t pan; /* Pan 0-255 */ uint32_t sfmt; /* Sound format */ uint32_t flags; /* Bit flags */ }; struct snd_card_aica { struct work_struct spu_dma_work; struct snd_card *card; struct aica_channel *channel; struct snd_pcm_substream *substream; int clicks; int current_period; struct timer_list timer; int master_volume; int dma_check; }; class='form'>
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authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /net/rxrpc/input.c
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'net/rxrpc/input.c')