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Diffstat (limited to 'sound/pci/asihpi/hpios.h')
| -rw-r--r-- | sound/pci/asihpi/hpios.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/sound/pci/asihpi/hpios.h b/sound/pci/asihpi/hpios.h new file mode 100644 index 00000000000..a62c3f1e5f0 --- /dev/null +++ b/sound/pci/asihpi/hpios.h @@ -0,0 +1,178 @@ +/****************************************************************************** + + AudioScience HPI driver + Copyright (C) 1997-2010 AudioScience Inc. <support@audioscience.com> + + 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 + +HPI Operating System Specific macros for Linux Kernel driver + +(C) Copyright AudioScience Inc. 1997-2003 +******************************************************************************/ +#ifndef _HPIOS_H_ +#define _HPIOS_H_ + +#undef HPI_OS_LINUX_KERNEL +#define HPI_OS_LINUX_KERNEL + +#define HPI_OS_DEFINED +#define HPI_KERNEL_MODE + +#define HPI_REASSIGN_DUPLICATE_ADAPTER_IDX + +#include <linux/io.h> +#include <asm/system.h> +#include <linux/ioctl.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/device.h> +#include <linux/firmware.h> +#include <linux/interrupt.h> +#include <linux/pci.h> + +#define HPI_NO_OS_FILE_OPS + +#ifdef CONFIG_64BIT +#define HPI64BIT +#endif + +/** Details of a memory area allocated with pci_alloc_consistent +Need all info for parameters to pci_free_consistent +*/ +struct consistent_dma_area { + struct device *pdev; + /* looks like dma-mapping dma_devres ?! */ + size_t size; + void *vaddr; + dma_addr_t dma_handle; +}; + +static inline u16 hpios_locked_mem_get_phys_addr(struct consistent_dma_area + *locked_mem_handle, u32 *p_physical_addr) +{ + *p_physical_addr = locked_mem_handle->dma_handle; + return 0; +} + +static inline u16 hpios_locked_mem_get_virt_addr(struct consistent_dma_area + *locked_mem_handle, void **pp_virtual_addr) +{ + *pp_virtual_addr = locked_mem_handle->vaddr; + return 0; +} + +static inline u16 hpios_locked_mem_valid(struct consistent_dma_area + *locked_mem_handle) +{ + return locked_mem_handle->size != 0; +} + +struct hpi_ioctl_linux { + void __user *phm; + void __user *phr; +}; + +/* Conflict?: H is already used by a number of drivers hid, bluetooth hci, + and some sound drivers sb16, hdsp, emu10k. AFAIK 0xFC is ununsed command +*/ +#define HPI_IOCTL_LINUX _IOWR('H', 0xFC, struct hpi_ioctl_linux) + +#define HPI_DEBUG_FLAG_ERROR KERN_ERR +#define HPI_DEBUG_FLAG_WARNING KERN_WARNING +#define HPI_DEBUG_FLAG_NOTICE KERN_NOTICE +#define HPI_DEBUG_FLAG_INFO KERN_INFO +#define HPI_DEBUG_FLAG_DEBUG KERN_DEBUG +#define HPI_DEBUG_FLAG_VERBOSE KERN_DEBUG /* kernel has no verbose */ + +#include <linux/spinlock.h> + +#define HPI_LOCKING + +struct hpios_spinlock { + spinlock_t lock; /* SEE hpios_spinlock */ + int lock_context; +}; + +/* The reason for all this evilness is that ALSA calls some of a drivers + * operators in atomic context, and some not. But all our functions channel + * through the HPI_Message conduit, so we can't handle the different context + * per function + */ +#define IN_LOCK_BH 1 +#define IN_LOCK_IRQ 0 +static inline void cond_lock(struct hpios_spinlock *l) +{ + if (irqs_disabled()) { + /* NO bh or isr can execute on this processor, + so ordinary lock will do + */ + spin_lock(&((l)->lock)); + l->lock_context = IN_LOCK_IRQ; + } else { + spin_lock_bh(&((l)->lock)); + l->lock_context = IN_LOCK_BH; + } +} + +static inline void cond_unlock(struct hpios_spinlock *l) +{ + if (l->lock_context == IN_LOCK_BH) + spin_unlock_bh(&((l)->lock)); + else + spin_unlock(&((l)->lock)); +} + +#define hpios_msgxlock_init(obj) spin_lock_init(&(obj)->lock) +#define hpios_msgxlock_lock(obj) cond_lock(obj) +#define hpios_msgxlock_un_lock(obj) cond_unlock(obj) + +#define hpios_dsplock_init(obj) spin_lock_init(&(obj)->dsp_lock.lock) +#define hpios_dsplock_lock(obj) cond_lock(&(obj)->dsp_lock) +#define hpios_dsplock_unlock(obj) cond_unlock(&(obj)->dsp_lock) + +#ifdef CONFIG_SND_DEBUG +#define HPI_DEBUG +#endif + +#define HPI_ALIST_LOCKING +#define hpios_alistlock_init(obj) spin_lock_init(&((obj)->list_lock.lock)) +#define hpios_alistlock_lock(obj) spin_lock(&((obj)->list_lock.lock)) +#define hpios_alistlock_un_lock(obj) spin_unlock(&((obj)->list_lock.lock)) + +struct hpi_adapter { + /* mutex prevents contention for one card + between multiple user programs (via ioctl) */ + struct mutex mutex; + u16 index; + u16 type; + + /* ALSA card structure */ + void *snd_card_asihpi; + + char *p_buffer; + size_t buffer_size; + struct pci_dev *pci; + void __iomem *ap_remapped_mem_base[HPI_MAX_ADAPTER_MEM_SPACES]; +}; + +static inline void hpios_unmap_io(void __iomem *addr, + unsigned long size) +{ + iounmap(addr); +} + +void __iomem *hpios_map_io(struct pci_dev *pci_dev, int idx, + unsigned int length); + +#endif |