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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /sound/pci/asihpi/hpios.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/pci/asihpi/hpios.h')
-rw-r--r--sound/pci/asihpi/hpios.h154
1 files changed, 154 insertions, 0 deletions
diff --git a/sound/pci/asihpi/hpios.h b/sound/pci/asihpi/hpios.h
new file mode 100644
index 0000000000..9e551bc462
--- /dev/null
+++ b/sound/pci/asihpi/hpios.h
@@ -0,0 +1,154 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/******************************************************************************
+
+ AudioScience HPI driver
+ Copyright (C) 1997-2011 AudioScience Inc. <support@audioscience.com>
+
+
+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_BUILD_KERNEL_MODE
+
+#include <linux/io.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>
+#include <linux/mutex.h>
+
+#define HPI_NO_OS_FILE_OPS
+
+/** 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 unused 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_unlock(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_BUILD_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_unlock(obj) spin_unlock(&((obj)->list_lock.lock))
+
+struct snd_card;
+
+/** pci drvdata points to an instance of this struct */
+struct hpi_adapter {
+ struct hpi_adapter_obj *adapter;
+ struct snd_card *snd_card;
+
+ int irq;
+ int interrupt_mode;
+ void (*interrupt_callback) (struct hpi_adapter *);
+
+ /* mutex prevents contention for one card
+ between multiple user programs (via ioctl) */
+ struct mutex mutex;
+ char *p_buffer;
+ size_t buffer_size;
+};
+
+#endif