/** * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved. * * This source file is released under GPL v2 license (no other versions). * See the COPYING file included in the main directory of this source * distribution for the license terms and conditions. * * @File ctvmem.h * * @Brief * This file contains the definition of virtual memory management object * for card device. * * @Author Liu Chun * @Date Mar 28 2008 */ #ifndef CTVMEM_H #define CTVMEM_H #define CT_PTP_NUM 4 /* num of device page table pages */ #include #include #include #include /* The chip can handle the page table of 4k pages * (emu20k1 can handle even 8k pages, but we don't use it right now) */ #define CT_PAGE_SIZE 4096 #define CT_PAGE_SHIFT 12 #define CT_PAGE_MASK (~(PAGE_SIZE - 1)) #define CT_PAGE_ALIGN(addr) ALIGN(addr, CT_PAGE_SIZE) struct ct_vm_block { unsigned int addr; /* starting logical addr of this block */ unsigned int size; /* size of this device virtual mem block */ struct list_head list; }; struct snd_pcm_substream; /* Virtual memory management object for card device */ struct ct_vm { struct snd_dma_buffer ptp[CT_PTP_NUM]; /* Device page table pages */ unsigned int size; /* Available addr space in bytes */ struct list_head unused; /* List of unused blocks */ struct list_head used; /* List of used blocks */ struct mutex lock; /* Map host addr (kmalloced/vmalloced) to device logical addr. */ struct ct_vm_block *(*map)(struct ct_vm *, struct snd_pcm_substream *, int size); /* Unmap device logical addr area. */ void (*unmap)(struct ct_vm *, struct ct_vm_block *block); dma_addr_t (*get_ptp_phys)(struct ct_vm *vm, int index); }; int ct_vm_create(struct ct_vm **rvm, struct pci_dev *pci); void ct_vm_destroy(struct ct_vm *vm); #endif /* CTVMEM_H */ remove'>logtreecommitdiff
path: root/drivers/usb/misc/legousbtower.c
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authorLiam R. Howlett <Liam.Howlett@Oracle.com>2017-01-17 10:59:03 -0500
committerDavid S. Miller <davem@davemloft.net>2017-01-30 14:27:54 -0800
commit047487241ff59374fded8c477f21453681f5995c (patch)
tree1c2616bd373ce5ea28aac2a53e32f5b5834901ce /drivers/usb/misc/legousbtower.c
parent7a7dc961a28b965a0d0303c2e989df17b411708b (diff)
sparc64: Handle PIO & MEM non-resumable errors.
User processes trying to access an invalid memory address via PIO will receive a SIGBUS signal instead of causing a panic. Memory errors will receive a SIGKILL since a SIGBUS may result in a coredump which may attempt to repeat the faulting access. Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/usb/misc/legousbtower.c')