[deliverable/linux.git] / sound / pci / asihpi / hpioctl.c

/*******************************************************************************

    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

Common Linux HPI ioctl and module probe/remove functions
*******************************************************************************/
#define SOURCEFILE_NAME "hpioctl.c"

#include "hpi_internal.h"
#include "hpimsginit.h"
#include "hpidebug.h"
#include "hpimsgx.h"
#include "hpioctl.h"

#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/moduleparam.h>
#include <asm/uaccess.h>
#include <linux/pci.h>
#include <linux/stringify.h>

#ifdef MODULE_FIRMWARE
MODULE_FIRMWARE("asihpi/dsp5000.bin");
MODULE_FIRMWARE("asihpi/dsp6200.bin");
MODULE_FIRMWARE("asihpi/dsp6205.bin");
MODULE_FIRMWARE("asihpi/dsp6400.bin");
MODULE_FIRMWARE("asihpi/dsp6600.bin");
MODULE_FIRMWARE("asihpi/dsp8700.bin");
MODULE_FIRMWARE("asihpi/dsp8900.bin");
#endif

static int prealloc_stream_buf;
module_param(prealloc_stream_buf, int, S_IRUGO);
MODULE_PARM_DESC(prealloc_stream_buf,
	"Preallocate size for per-adapter stream buffer");

/* Allow the debug level to be changed after module load.
 E.g.   echo 2 > /sys/module/asihpi/parameters/hpiDebugLevel
*/
module_param(hpi_debug_level, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(hpi_debug_level, "debug verbosity 0..5");

/* List of adapters found */
static struct hpi_adapter adapters[HPI_MAX_ADAPTERS];

/* Wrapper function to HPI_Message to enable dumping of the
   message and response types.
*/
static void hpi_send_recv_f(struct hpi_message *phm, struct hpi_response *phr,
	struct file *file)
{
	int adapter = phm->adapter_index;

	if ((adapter >= HPI_MAX_ADAPTERS || adapter < 0)
		&& (phm->object != HPI_OBJ_SUBSYSTEM))
		phr->error = HPI_ERROR_INVALID_OBJ_INDEX;
	else
		hpi_send_recv_ex(phm, phr, file);
}

/* This is called from hpifunc.c functions, called by ALSA
 * (or other kernel process) In this case there is no file descriptor
 * available for the message cache code
 */
void hpi_send_recv(struct hpi_message *phm, struct hpi_response *phr)
{
	hpi_send_recv_f(phm, phr, HOWNER_KERNEL);
}

EXPORT_SYMBOL(hpi_send_recv);
/* for radio-asihpi */

int asihpi_hpi_release(struct file *file)
{
	struct hpi_message hm;
	struct hpi_response hr;

/* HPI_DEBUG_LOG(INFO,"hpi_release file %p, pid %d\n", file, current->pid); */
	/* close the subsystem just in case the application forgot to. */
	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
		HPI_SUBSYS_CLOSE);
	hpi_send_recv_ex(&hm, &hr, file);
	return 0;
}

long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	struct hpi_ioctl_linux __user *phpi_ioctl_data;
	void __user *puhm;
	void __user *puhr;
	union hpi_message_buffer_v1 *hm;
	union hpi_response_buffer_v1 *hr;
	u16 res_max_size;
	u32 uncopied_bytes;
	struct hpi_adapter *pa = NULL;
	int err = 0;

	if (cmd != HPI_IOCTL_LINUX)
		return -EINVAL;

	hm = kmalloc(sizeof(*hm), GFP_KERNEL);
	hr = kmalloc(sizeof(*hr), GFP_KERNEL);
	if (!hm || !hr) {
		err = -ENOMEM;
		goto out;
	}

	phpi_ioctl_data = (struct hpi_ioctl_linux __user *)arg;

	/* Read the message and response pointers from user space.  */
	if (get_user(puhm, &phpi_ioctl_data->phm)
		|| get_user(puhr, &phpi_ioctl_data->phr)) {
		err = -EFAULT;
		goto out;
	}

	/* Now read the message size and data from user space.  */
	if (get_user(hm->h.size, (u16 __user *)puhm)) {
		err = -EFAULT;
		goto out;
	}
	if (hm->h.size > sizeof(*hm))
		hm->h.size = sizeof(*hm);

	/* printk(KERN_INFO "message size %d\n", hm->h.wSize); */

	uncopied_bytes = copy_from_user(hm, puhm, hm->h.size);
	if (uncopied_bytes) {
		HPI_DEBUG_LOG(ERROR, "uncopied bytes %d\n", uncopied_bytes);
		err = -EFAULT;
		goto out;
	}

	if (get_user(res_max_size, (u16 __user *)puhr)) {
		err = -EFAULT;
		goto out;
	}
	/* printk(KERN_INFO "user response size %d\n", res_max_size); */
	if (res_max_size < sizeof(struct hpi_response_header)) {
		HPI_DEBUG_LOG(WARNING, "small res size %d\n", res_max_size);
		err = -EFAULT;
		goto out;
	}

	pa = &adapters[hm->h.adapter_index];
	hr->h.size = res_max_size;
	if (hm->h.object == HPI_OBJ_SUBSYSTEM) {
		switch (hm->h.function) {
		case HPI_SUBSYS_CREATE_ADAPTER:
		case HPI_SUBSYS_DELETE_ADAPTER:
			/* Application must not use these functions! */
			hr->h.size = sizeof(hr->h);
			hr->h.error = HPI_ERROR_INVALID_OPERATION;
			hr->h.function = hm->h.function;
			uncopied_bytes = copy_to_user(puhr, hr, hr->h.size);
			if (uncopied_bytes)
				err = -EFAULT;
			else
				err = 0;
			goto out;

		default:
			hpi_send_recv_f(&hm->m0, &hr->r0, file);
		}
	} else {
		u16 __user *ptr = NULL;
		u32 size = 0;

		/* -1=no data 0=read from user mem, 1=write to user mem */
		int wrflag = -1;
		u32 adapter = hm->h.adapter_index;

		if ((hm->h.adapter_index > HPI_MAX_ADAPTERS) || (!pa->type)) {
			hpi_init_response(&hr->r0, HPI_OBJ_ADAPTER,
				HPI_ADAPTER_OPEN,
				HPI_ERROR_BAD_ADAPTER_NUMBER);

			uncopied_bytes =
				copy_to_user(puhr, hr, sizeof(hr->h));
			if (uncopied_bytes)
				err = -EFAULT;
			else
				err = 0;
			goto out;
		}

		if (mutex_lock_interruptible(&adapters[adapter].mutex)) {
			err = -EINTR;
			goto out;
		}

		/* Dig out any pointers embedded in the message.  */
		switch (hm->h.function) {
		case HPI_OSTREAM_WRITE:
		case HPI_ISTREAM_READ:{
				/* Yes, sparse, this is correct. */
				ptr = (u16 __user *)hm->m0.u.d.u.data.pb_data;
				size = hm->m0.u.d.u.data.data_size;

				/* Allocate buffer according to application request.
				   ?Is it better to alloc/free for the duration
				   of the transaction?
				 */
				if (pa->buffer_size < size) {
					HPI_DEBUG_LOG(DEBUG,
						"Realloc adapter %d stream "
						"buffer from %zd to %d\n",
						hm->h.adapter_index,
						pa->buffer_size, size);
					if (pa->p_buffer) {
						pa->buffer_size = 0;
						vfree(pa->p_buffer);
					}
					pa->p_buffer = vmalloc(size);
					if (pa->p_buffer)
						pa->buffer_size = size;
					else {
						HPI_DEBUG_LOG(ERROR,
							"HPI could not allocate "
							"stream buffer size %d\n",
							size);

						mutex_unlock(&adapters
							[adapter].mutex);
						err = -EINVAL;
						goto out;
					}
				}

				hm->m0.u.d.u.data.pb_data = pa->p_buffer;
				if (hm->h.function == HPI_ISTREAM_READ)
					/* from card, WRITE to user mem */
					wrflag = 1;
				else
					wrflag = 0;
				break;
			}

		default:
			size = 0;
			break;
		}

		if (size && (wrflag == 0)) {
			uncopied_bytes =
				copy_from_user(pa->p_buffer, ptr, size);
			if (uncopied_bytes)
				HPI_DEBUG_LOG(WARNING,
					"Missed %d of %d "
					"bytes from user\n", uncopied_bytes,
					size);
		}

		hpi_send_recv_f(&hm->m0, &hr->r0, file);

		if (size && (wrflag == 1)) {
			uncopied_bytes =
				copy_to_user(ptr, pa->p_buffer, size);
			if (uncopied_bytes)
				HPI_DEBUG_LOG(WARNING,
					"Missed %d of %d " "bytes to user\n",
					uncopied_bytes, size);
		}

		mutex_unlock(&adapters[adapter].mutex);
	}

	/* on return response size must be set */
	/*printk(KERN_INFO "response size %d\n", hr->h.wSize); */

	if (!hr->h.size) {
		HPI_DEBUG_LOG(ERROR, "response zero size\n");
		err = -EFAULT;
		goto out;
	}

	if (hr->h.size > res_max_size) {
		HPI_DEBUG_LOG(ERROR, "response too big %d %d\n", hr->h.size,
			res_max_size);
		hr->h.error = HPI_ERROR_RESPONSE_BUFFER_TOO_SMALL;
		hr->h.specific_error = hr->h.size;
		hr->h.size = sizeof(hr->h);
	}

	uncopied_bytes = copy_to_user(puhr, hr, hr->h.size);
	if (uncopied_bytes) {
		HPI_DEBUG_LOG(ERROR, "uncopied bytes %d\n", uncopied_bytes);
		err = -EFAULT;
		goto out;
	}

out:
	kfree(hm);
	kfree(hr);
	return err;
}

int __devinit asihpi_adapter_probe(struct pci_dev *pci_dev,
	const struct pci_device_id *pci_id)
{
	int err, idx, nm;
	unsigned int memlen;
	struct hpi_message hm;
	struct hpi_response hr;
	struct hpi_adapter adapter;
	struct hpi_pci pci;

	memset(&adapter, 0, sizeof(adapter));

	dev_printk(KERN_DEBUG, &pci_dev->dev,
		"probe %04x:%04x,%04x:%04x,%04x\n", pci_dev->vendor,
		pci_dev->device, pci_dev->subsystem_vendor,
		pci_dev->subsystem_device, pci_dev->devfn);

	if (pci_enable_device(pci_dev) < 0) {
		dev_printk(KERN_ERR, &pci_dev->dev,
			"pci_enable_device failed, disabling device\n");
		return -EIO;
	}

	pci_set_master(pci_dev);	/* also sets latency timer if < 16 */

	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
		HPI_SUBSYS_CREATE_ADAPTER);
	hpi_init_response(&hr, HPI_OBJ_SUBSYSTEM, HPI_SUBSYS_CREATE_ADAPTER,
		HPI_ERROR_PROCESSING_MESSAGE);

	hm.adapter_index = HPI_ADAPTER_INDEX_INVALID;

	adapter.pci = pci_dev;

	nm = HPI_MAX_ADAPTER_MEM_SPACES;

	for (idx = 0; idx < nm; idx++) {
		HPI_DEBUG_LOG(INFO, "resource %d %s %08llx-%08llx %04llx\n",
			idx, pci_dev->resource[idx].name,
			(unsigned long long)pci_resource_start(pci_dev, idx),
			(unsigned long long)pci_resource_end(pci_dev, idx),
			(unsigned long long)pci_resource_flags(pci_dev, idx));

		if (pci_resource_flags(pci_dev, idx) & IORESOURCE_MEM) {
			memlen = pci_resource_len(pci_dev, idx);
			adapter.ap_remapped_mem_base[idx] =
				ioremap(pci_resource_start(pci_dev, idx),
				memlen);
			if (!adapter.ap_remapped_mem_base[idx]) {
				HPI_DEBUG_LOG(ERROR,
					"ioremap failed, aborting\n");
				/* unmap previously mapped pci mem space */
				goto err;
			}
		}

		pci.ap_mem_base[idx] = adapter.ap_remapped_mem_base[idx];
	}

	pci.pci_dev = pci_dev;
	hm.u.s.resource.bus_type = HPI_BUS_PCI;
	hm.u.s.resource.r.pci = &pci;

	/* call CreateAdapterObject on the relevant hpi module */
	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
	if (hr.error)
		goto err;

	if (prealloc_stream_buf) {
		adapter.p_buffer = vmalloc(prealloc_stream_buf);
		if (!adapter.p_buffer) {
			HPI_DEBUG_LOG(ERROR,
				"HPI could not allocate "
				"kernel buffer size %d\n",
				prealloc_stream_buf);
			goto err;
		}
	}

	adapter.index = hr.u.s.adapter_index;
	adapter.type = hr.u.s.aw_adapter_list[adapter.index];
	hm.adapter_index = adapter.index;

	err = hpi_adapter_open(adapter.index);
	if (err)
		goto err;

	adapter.snd_card_asihpi = NULL;
	/* WARNING can't init mutex in 'adapter'
	 * and then copy it to adapters[] ?!?!
	 */
	adapters[hr.u.s.adapter_index] = adapter;
	mutex_init(&adapters[adapter.index].mutex);
	pci_set_drvdata(pci_dev, &adapters[adapter.index]);

	dev_printk(KERN_INFO, &pci_dev->dev,
		"probe succeeded for ASI%04X HPI index %d\n", adapter.type,
		adapter.index);

	return 0;

err:
	for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; idx++) {
		if (adapter.ap_remapped_mem_base[idx]) {
			iounmap(adapter.ap_remapped_mem_base[idx]);
			adapter.ap_remapped_mem_base[idx] = NULL;
		}
	}

	if (adapter.p_buffer) {
		adapter.buffer_size = 0;
		vfree(adapter.p_buffer);
	}

	HPI_DEBUG_LOG(ERROR, "adapter_probe failed\n");
	return -ENODEV;
}

void __devexit asihpi_adapter_remove(struct pci_dev *pci_dev)
{
	int idx;
	struct hpi_message hm;
	struct hpi_response hr;
	struct hpi_adapter *pa;
	pa = pci_get_drvdata(pci_dev);

	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
		HPI_SUBSYS_DELETE_ADAPTER);
	hm.obj_index = pa->index;
	hm.adapter_index = HPI_ADAPTER_INDEX_INVALID;
	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);

	/* unmap PCI memory space, mapped during device init. */
	for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; idx++) {
		if (pa->ap_remapped_mem_base[idx]) {
			iounmap(pa->ap_remapped_mem_base[idx]);
			pa->ap_remapped_mem_base[idx] = NULL;
		}
	}

	if (pa->p_buffer) {
		pa->buffer_size = 0;
		vfree(pa->p_buffer);
	}

	pci_set_drvdata(pci_dev, NULL);
	if (1)
		dev_printk(KERN_INFO, &pci_dev->dev,
			"remove %04x:%04x,%04x:%04x,%04x," " HPI index %d.\n",
			pci_dev->vendor, pci_dev->device,
			pci_dev->subsystem_vendor, pci_dev->subsystem_device,
			pci_dev->devfn, pa->index);
}

void __init asihpi_init(void)
{
	struct hpi_message hm;
	struct hpi_response hr;

	memset(adapters, 0, sizeof(adapters));

	printk(KERN_INFO "ASIHPI driver " HPI_VER_STRING "\n");

	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
		HPI_SUBSYS_DRIVER_LOAD);
	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
}

void asihpi_exit(void)
{
	struct hpi_message hm;
	struct hpi_response hr;

	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
		HPI_SUBSYS_DRIVER_UNLOAD);
	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
}
Commit	Line	Data
719f82d3 EB	1	/*******************************************************************************
	2
	3	AudioScience HPI driver
	4	Copyright (C) 1997-2010 AudioScience Inc. <support@audioscience.com>
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of version 2 of the GNU General Public License as
	8	published by the Free Software Foundation;
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program; if not, write to the Free Software
	17	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	18
	19	Common Linux HPI ioctl and module probe/remove functions
	20	*******************************************************************************/
	21	#define SOURCEFILE_NAME "hpioctl.c"
	22
	23	#include "hpi_internal.h"
	24	#include "hpimsginit.h"
	25	#include "hpidebug.h"
	26	#include "hpimsgx.h"
	27	#include "hpioctl.h"
	28
	29	#include <linux/fs.h>
	30	#include <linux/slab.h>
	31	#include <linux/moduleparam.h>
	32	#include <asm/uaccess.h>
3285ea10	33	#include <linux/pci.h>
719f82d3 EB	34	#include <linux/stringify.h>
	35
	36	#ifdef MODULE_FIRMWARE
	37	MODULE_FIRMWARE("asihpi/dsp5000.bin");
	38	MODULE_FIRMWARE("asihpi/dsp6200.bin");
	39	MODULE_FIRMWARE("asihpi/dsp6205.bin");
	40	MODULE_FIRMWARE("asihpi/dsp6400.bin");
	41	MODULE_FIRMWARE("asihpi/dsp6600.bin");
	42	MODULE_FIRMWARE("asihpi/dsp8700.bin");
	43	MODULE_FIRMWARE("asihpi/dsp8900.bin");
	44	#endif
	45
	46	static int prealloc_stream_buf;
	47	module_param(prealloc_stream_buf, int, S_IRUGO);
	48	MODULE_PARM_DESC(prealloc_stream_buf,
3285ea10	49	"Preallocate size for per-adapter stream buffer");
719f82d3 EB	50
	51	/* Allow the debug level to be changed after module load.
	52	E.g. echo 2 > /sys/module/asihpi/parameters/hpiDebugLevel
	53	*/
	54	module_param(hpi_debug_level, int, S_IRUGO \| S_IWUSR);
	55	MODULE_PARM_DESC(hpi_debug_level, "debug verbosity 0..5");
	56
	57	/* List of adapters found */
	58	static struct hpi_adapter adapters[HPI_MAX_ADAPTERS];
	59
	60	/* Wrapper function to HPI_Message to enable dumping of the
	61	message and response types.
	62	*/
	63	static void hpi_send_recv_f(struct hpi_message phm, struct hpi_response phr,
	64	struct file *file)
	65	{
	66	int adapter = phm->adapter_index;
	67
	68	if ((adapter >= HPI_MAX_ADAPTERS \|\| adapter < 0)
	69	&& (phm->object != HPI_OBJ_SUBSYSTEM))
	70	phr->error = HPI_ERROR_INVALID_OBJ_INDEX;
	71	else
	72	hpi_send_recv_ex(phm, phr, file);
	73	}
	74
	75	/* This is called from hpifunc.c functions, called by ALSA
	76	* (or other kernel process) In this case there is no file descriptor
	77	* available for the message cache code
	78	*/
	79	void hpi_send_recv(struct hpi_message phm, struct hpi_response phr)
	80	{
	81	hpi_send_recv_f(phm, phr, HOWNER_KERNEL);
	82	}
	83
	84	EXPORT_SYMBOL(hpi_send_recv);
	85	/* for radio-asihpi */
	86
	87	int asihpi_hpi_release(struct file *file)
	88	{
	89	struct hpi_message hm;
	90	struct hpi_response hr;
	91
	92	/* HPI_DEBUG_LOG(INFO,"hpi_release file %p, pid %d\n", file, current->pid); */
	93	/* close the subsystem just in case the application forgot to. */
	94	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
	95	HPI_SUBSYS_CLOSE);
	96	hpi_send_recv_ex(&hm, &hr, file);
	97	return 0;
	98	}
	99
	100	long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
	101	{
	102	struct hpi_ioctl_linux __user *phpi_ioctl_data;
	103	void __user *puhm;
	104	void __user *puhr;
	105	union hpi_message_buffer_v1 *hm;
	106	union hpi_response_buffer_v1 *hr;
	107	u16 res_max_size;
	108	u32 uncopied_bytes;
	109	struct hpi_adapter *pa = NULL;
	110	int err = 0;
	111
	112	if (cmd != HPI_IOCTL_LINUX)
	113	return -EINVAL;
114
115	hm = kmalloc(sizeof(*hm), GFP_KERNEL);
116	hr = kmalloc(sizeof(*hr), GFP_KERNEL);
117	if (!hm \|\| !hr) {
118	err = -ENOMEM;
119	goto out;
120	}
121
122	phpi_ioctl_data = (struct hpi_ioctl_linux __user *)arg;
123
124	/* Read the message and response pointers from user space. */
3285ea10 EB	125	if (get_user(puhm, &phpi_ioctl_data->phm)
3285ea10 EB	126	\|\| get_user(puhr, &phpi_ioctl_data->phr)) {
ec9d04b2 KV	127	err = -EFAULT;
	128	goto out;
	129	}
719f82d3 EB	130
719f82d3 EB	131	/* Now read the message size and data from user space. */
ec9d04b2 KV	132	if (get_user(hm->h.size, (u16 __user *)puhm)) {
	133	err = -EFAULT;
	134	goto out;
	135	}
719f82d3 EB	136	if (hm->h.size > sizeof(*hm))
	137	hm->h.size = sizeof(*hm);
	138
3285ea10	139	/* printk(KERN_INFO "message size %d\n", hm->h.wSize); */
719f82d3 EB	140
	141	uncopied_bytes = copy_from_user(hm, puhm, hm->h.size);
	142	if (uncopied_bytes) {
	143	HPI_DEBUG_LOG(ERROR, "uncopied bytes %d\n", uncopied_bytes);
	144	err = -EFAULT;
	145	goto out;
	146	}
	147
ec9d04b2 KV	148	if (get_user(res_max_size, (u16 __user *)puhr)) {
	149	err = -EFAULT;
	150	goto out;
	151	}
719f82d3 EB	152	/* printk(KERN_INFO "user response size %d\n", res_max_size); */
	153	if (res_max_size < sizeof(struct hpi_response_header)) {
	154	HPI_DEBUG_LOG(WARNING, "small res size %d\n", res_max_size);
	155	err = -EFAULT;
	156	goto out;
	157	}
	158
	159	pa = &adapters[hm->h.adapter_index];
3285ea10	160	hr->h.size = res_max_size;
719f82d3 EB	161	if (hm->h.object == HPI_OBJ_SUBSYSTEM) {
	162	switch (hm->h.function) {
	163	case HPI_SUBSYS_CREATE_ADAPTER:
	164	case HPI_SUBSYS_DELETE_ADAPTER:
	165	/* Application must not use these functions! */
	166	hr->h.size = sizeof(hr->h);
	167	hr->h.error = HPI_ERROR_INVALID_OPERATION;
	168	hr->h.function = hm->h.function;
	169	uncopied_bytes = copy_to_user(puhr, hr, hr->h.size);
	170	if (uncopied_bytes)
	171	err = -EFAULT;
	172	else
	173	err = 0;
	174	goto out;
	175
	176	default:
	177	hpi_send_recv_f(&hm->m0, &hr->r0, file);
	178	}
	179	} else {
	180	u16 __user *ptr = NULL;
	181	u32 size = 0;
	182
	183	/* -1=no data 0=read from user mem, 1=write to user mem */
	184	int wrflag = -1;
	185	u32 adapter = hm->h.adapter_index;
	186
	187	if ((hm->h.adapter_index > HPI_MAX_ADAPTERS) \|\| (!pa->type)) {
	188	hpi_init_response(&hr->r0, HPI_OBJ_ADAPTER,
	189	HPI_ADAPTER_OPEN,
	190	HPI_ERROR_BAD_ADAPTER_NUMBER);
	191
	192	uncopied_bytes =
	193	copy_to_user(puhr, hr, sizeof(hr->h));
	194	if (uncopied_bytes)
	195	err = -EFAULT;
	196	else
	197	err = 0;
	198	goto out;
	199	}
	200
	201	if (mutex_lock_interruptible(&adapters[adapter].mutex)) {
	202	err = -EINTR;
	203	goto out;
	204	}
	205
	206	/* Dig out any pointers embedded in the message. */
	207	switch (hm->h.function) {
	208	case HPI_OSTREAM_WRITE:
	209	case HPI_ISTREAM_READ:{
	210	/* Yes, sparse, this is correct. */
	211	ptr = (u16 __user *)hm->m0.u.d.u.data.pb_data;
	212	size = hm->m0.u.d.u.data.data_size;
	213
	214	/* Allocate buffer according to application request.
	215	?Is it better to alloc/free for the duration
	216	of the transaction?
	217	*/
	218	if (pa->buffer_size < size) {
	219	HPI_DEBUG_LOG(DEBUG,
3285ea10	220	"Realloc adapter %d stream "
719f82d3 EB	221	"buffer from %zd to %d\n",
	222	hm->h.adapter_index,
	223	pa->buffer_size, size);
	224	if (pa->p_buffer) {
	225	pa->buffer_size = 0;
	226	vfree(pa->p_buffer);
	227	}
	228	pa->p_buffer = vmalloc(size);
	229	if (pa->p_buffer)
	230	pa->buffer_size = size;
	231	else {
	232	HPI_DEBUG_LOG(ERROR,
	233	"HPI could not allocate "
	234	"stream buffer size %d\n",
	235	size);
	236
	237	mutex_unlock(&adapters
	238	[adapter].mutex);
	239	err = -EINVAL;
	240	goto out;
	241	}
	242	}
	243
	244	hm->m0.u.d.u.data.pb_data = pa->p_buffer;
	245	if (hm->h.function == HPI_ISTREAM_READ)
	246	/* from card, WRITE to user mem */
	247	wrflag = 1;
	248	else
	249	wrflag = 0;
	250	break;
	251	}
	252
	253	default:
	254	size = 0;
	255	break;
	256	}
	257
	258	if (size && (wrflag == 0)) {
	259	uncopied_bytes =
	260	copy_from_user(pa->p_buffer, ptr, size);
	261	if (uncopied_bytes)
	262	HPI_DEBUG_LOG(WARNING,
3285ea10	263	"Missed %d of %d "
719f82d3 EB	264	"bytes from user\n", uncopied_bytes,
	265	size);
	266	}
	267
	268	hpi_send_recv_f(&hm->m0, &hr->r0, file);
	269
	270	if (size && (wrflag == 1)) {
	271	uncopied_bytes =
	272	copy_to_user(ptr, pa->p_buffer, size);
	273	if (uncopied_bytes)
	274	HPI_DEBUG_LOG(WARNING,
3285ea10	275	"Missed %d of %d " "bytes to user\n",
719f82d3 EB	276	uncopied_bytes, size);
	277	}
	278
	279	mutex_unlock(&adapters[adapter].mutex);
	280	}
	281
	282	/* on return response size must be set */
	283	/printk(KERN_INFO "response size %d\n", hr->h.wSize); /
	284
	285	if (!hr->h.size) {
	286	HPI_DEBUG_LOG(ERROR, "response zero size\n");
	287	err = -EFAULT;
	288	goto out;
	289	}
	290
	291	if (hr->h.size > res_max_size) {
	292	HPI_DEBUG_LOG(ERROR, "response too big %d %d\n", hr->h.size,
	293	res_max_size);
3285ea10 EB	294	hr->h.error = HPI_ERROR_RESPONSE_BUFFER_TOO_SMALL;
	295	hr->h.specific_error = hr->h.size;
	296	hr->h.size = sizeof(hr->h);
719f82d3 EB	297	}
	298
	299	uncopied_bytes = copy_to_user(puhr, hr, hr->h.size);
	300	if (uncopied_bytes) {
	301	HPI_DEBUG_LOG(ERROR, "uncopied bytes %d\n", uncopied_bytes);
	302	err = -EFAULT;
	303	goto out;
	304	}
	305
	306	out:
	307	kfree(hm);
	308	kfree(hr);
	309	return err;
	310	}
	311
	312	int __devinit asihpi_adapter_probe(struct pci_dev *pci_dev,
	313	const struct pci_device_id *pci_id)
	314	{
	315	int err, idx, nm;
	316	unsigned int memlen;
	317	struct hpi_message hm;
	318	struct hpi_response hr;
	319	struct hpi_adapter adapter;
	320	struct hpi_pci pci;
	321
	322	memset(&adapter, 0, sizeof(adapter));
	323
3285ea10 EB	324	dev_printk(KERN_DEBUG, &pci_dev->dev,
	325	"probe %04x:%04x,%04x:%04x,%04x\n", pci_dev->vendor,
	326	pci_dev->device, pci_dev->subsystem_vendor,
719f82d3 EB	327	pci_dev->subsystem_device, pci_dev->devfn);
719f82d3 EB	328
3285ea10 EB	329	if (pci_enable_device(pci_dev) < 0) {
	330	dev_printk(KERN_ERR, &pci_dev->dev,
	331	"pci_enable_device failed, disabling device\n");
	332	return -EIO;
	333	}
	334
	335	pci_set_master(pci_dev); /* also sets latency timer if < 16 */
	336
719f82d3 EB	337	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
	338	HPI_SUBSYS_CREATE_ADAPTER);
	339	hpi_init_response(&hr, HPI_OBJ_SUBSYSTEM, HPI_SUBSYS_CREATE_ADAPTER,
	340	HPI_ERROR_PROCESSING_MESSAGE);
	341
3285ea10	342	hm.adapter_index = HPI_ADAPTER_INDEX_INVALID;
719f82d3	343
719f82d3 EB	344	adapter.pci = pci_dev;
	345
	346	nm = HPI_MAX_ADAPTER_MEM_SPACES;
	347
	348	for (idx = 0; idx < nm; idx++) {
	349	HPI_DEBUG_LOG(INFO, "resource %d %s %08llx-%08llx %04llx\n",
	350	idx, pci_dev->resource[idx].name,
	351	(unsigned long long)pci_resource_start(pci_dev, idx),
	352	(unsigned long long)pci_resource_end(pci_dev, idx),
	353	(unsigned long long)pci_resource_flags(pci_dev, idx));
	354
	355	if (pci_resource_flags(pci_dev, idx) & IORESOURCE_MEM) {
	356	memlen = pci_resource_len(pci_dev, idx);
	357	adapter.ap_remapped_mem_base[idx] =
	358	ioremap(pci_resource_start(pci_dev, idx),
	359	memlen);
	360	if (!adapter.ap_remapped_mem_base[idx]) {
	361	HPI_DEBUG_LOG(ERROR,
	362	"ioremap failed, aborting\n");
	363	/* unmap previously mapped pci mem space */
	364	goto err;
	365	}
	366	}
	367
	368	pci.ap_mem_base[idx] = adapter.ap_remapped_mem_base[idx];
	369	}
	370
3285ea10	371	pci.pci_dev = pci_dev;
719f82d3 EB	372	hm.u.s.resource.bus_type = HPI_BUS_PCI;
	373	hm.u.s.resource.r.pci = &pci;
	374
	375	/* call CreateAdapterObject on the relevant hpi module */
	376	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
	377	if (hr.error)
	378	goto err;
	379
	380	if (prealloc_stream_buf) {
	381	adapter.p_buffer = vmalloc(prealloc_stream_buf);
	382	if (!adapter.p_buffer) {
	383	HPI_DEBUG_LOG(ERROR,
	384	"HPI could not allocate "
	385	"kernel buffer size %d\n",
	386	prealloc_stream_buf);
	387	goto err;
	388	}
	389	}
	390
	391	adapter.index = hr.u.s.adapter_index;
	392	adapter.type = hr.u.s.aw_adapter_list[adapter.index];
	393	hm.adapter_index = adapter.index;
	394
ba94455c	395	err = hpi_adapter_open(adapter.index);
719f82d3 EB	396	if (err)
	397	goto err;
	398
	399	adapter.snd_card_asihpi = NULL;
	400	/* WARNING can't init mutex in 'adapter'
	401	* and then copy it to adapters[] ?!?!
	402	*/
	403	adapters[hr.u.s.adapter_index] = adapter;
	404	mutex_init(&adapters[adapter.index].mutex);
	405	pci_set_drvdata(pci_dev, &adapters[adapter.index]);
	406
3285ea10 EB	407	dev_printk(KERN_INFO, &pci_dev->dev,
	408	"probe succeeded for ASI%04X HPI index %d\n", adapter.type,
	409	adapter.index);
719f82d3 EB	410
	411	return 0;
	412
	413	err:
	414	for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; idx++) {
	415	if (adapter.ap_remapped_mem_base[idx]) {
	416	iounmap(adapter.ap_remapped_mem_base[idx]);
	417	adapter.ap_remapped_mem_base[idx] = NULL;
	418	}
	419	}
	420
	421	if (adapter.p_buffer) {
	422	adapter.buffer_size = 0;
	423	vfree(adapter.p_buffer);
	424	}
	425
	426	HPI_DEBUG_LOG(ERROR, "adapter_probe failed\n");
	427	return -ENODEV;
	428	}
	429
	430	void __devexit asihpi_adapter_remove(struct pci_dev *pci_dev)
	431	{
	432	int idx;
	433	struct hpi_message hm;
	434	struct hpi_response hr;
	435	struct hpi_adapter *pa;
5dbea6b1	436	pa = pci_get_drvdata(pci_dev);
719f82d3 EB	437
	438	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
	439	HPI_SUBSYS_DELETE_ADAPTER);
3285ea10 EB	440	hm.obj_index = pa->index;
3285ea10 EB	441	hm.adapter_index = HPI_ADAPTER_INDEX_INVALID;
719f82d3 EB	442	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
	443
	444	/* unmap PCI memory space, mapped during device init. */
	445	for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; idx++) {
	446	if (pa->ap_remapped_mem_base[idx]) {
	447	iounmap(pa->ap_remapped_mem_base[idx]);
	448	pa->ap_remapped_mem_base[idx] = NULL;
	449	}
	450	}
	451
	452	if (pa->p_buffer) {
	453	pa->buffer_size = 0;
	454	vfree(pa->p_buffer);
	455	}
	456
	457	pci_set_drvdata(pci_dev, NULL);
3285ea10 EB	458	if (1)
	459	dev_printk(KERN_INFO, &pci_dev->dev,
	460	"remove %04x:%04x,%04x:%04x,%04x," " HPI index %d.\n",
	461	pci_dev->vendor, pci_dev->device,
	462	pci_dev->subsystem_vendor, pci_dev->subsystem_device,
	463	pci_dev->devfn, pa->index);
719f82d3 EB	464	}
	465
	466	void __init asihpi_init(void)
	467	{
	468	struct hpi_message hm;
	469	struct hpi_response hr;
	470
	471	memset(adapters, 0, sizeof(adapters));
	472
1dd6aaaa	473	printk(KERN_INFO "ASIHPI driver " HPI_VER_STRING "\n");
719f82d3 EB	474
	475	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
	476	HPI_SUBSYS_DRIVER_LOAD);
	477	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
	478	}
	479
	480	void asihpi_exit(void)
	481	{
	482	struct hpi_message hm;
	483	struct hpi_response hr;
	484
	485	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
	486	HPI_SUBSYS_DRIVER_UNLOAD);
	487	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
	488	}