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

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

    AudioScience HPI driver
    Copyright (C) 1997-2011  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 "hpicmn.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;
	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;
	}

	switch (hm->h.function) {
	case HPI_SUBSYS_CREATE_ADAPTER:
	case HPI_ADAPTER_DELETE:
		/* 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;
	}

	hr->h.size = res_max_size;
	if (hm->h.object == HPI_OBJ_SUBSYSTEM) {
		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;
		struct hpi_adapter *pa = &adapters[adapter];

		if ((adapter >= 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(&pa->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(&pa->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(&pa->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 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 %pR\n", idx,
			&pci_dev->resource[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.adapter_type;

	hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
		HPI_ADAPTER_OPEN);
	hm.adapter_index = adapter.index;
	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);

	if (hr.error)
		goto err;

	adapter.snd_card_asihpi = NULL;
	/* WARNING can't init mutex in 'adapter'
	 * and then copy it to adapters[] ?!?!
	 */
	adapters[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_ADAPTER,
		HPI_ADAPTER_DELETE);
	hm.adapter_index = pa->index;
	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)
		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);

	memset(pa, 0, sizeof(*pa));
}

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
1c073b67	4	Copyright (C) 1997-2011 AudioScience Inc. <support@audioscience.com>
719f82d3 EB	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"
6d0b898e	28	#include "hpicmn.h"
719f82d3 EB	29
	30	#include <linux/fs.h>
	31	#include <linux/slab.h>
	32	#include <linux/moduleparam.h>
	33	#include <asm/uaccess.h>
3285ea10	34	#include <linux/pci.h>
719f82d3 EB	35	#include <linux/stringify.h>
	36
	37	#ifdef MODULE_FIRMWARE
	38	MODULE_FIRMWARE("asihpi/dsp5000.bin");
	39	MODULE_FIRMWARE("asihpi/dsp6200.bin");
	40	MODULE_FIRMWARE("asihpi/dsp6205.bin");
	41	MODULE_FIRMWARE("asihpi/dsp6400.bin");
	42	MODULE_FIRMWARE("asihpi/dsp6600.bin");
	43	MODULE_FIRMWARE("asihpi/dsp8700.bin");
	44	MODULE_FIRMWARE("asihpi/dsp8900.bin");
	45	#endif
	46
	47	static int prealloc_stream_buf;
	48	module_param(prealloc_stream_buf, int, S_IRUGO);
	49	MODULE_PARM_DESC(prealloc_stream_buf,
3285ea10	50	"Preallocate size for per-adapter stream buffer");
719f82d3 EB	51
	52	/* Allow the debug level to be changed after module load.
	53	E.g. echo 2 > /sys/module/asihpi/parameters/hpiDebugLevel
	54	*/
	55	module_param(hpi_debug_level, int, S_IRUGO \| S_IWUSR);
	56	MODULE_PARM_DESC(hpi_debug_level, "debug verbosity 0..5");
	57
	58	/* List of adapters found */
	59	static struct hpi_adapter adapters[HPI_MAX_ADAPTERS];
	60
	61	/* Wrapper function to HPI_Message to enable dumping of the
	62	message and response types.
	63	*/
	64	static void hpi_send_recv_f(struct hpi_message phm, struct hpi_response phr,
	65	struct file *file)
	66	{
	67	int adapter = phm->adapter_index;
	68
	69	if ((adapter >= HPI_MAX_ADAPTERS \|\| adapter < 0)
	70	&& (phm->object != HPI_OBJ_SUBSYSTEM))
	71	phr->error = HPI_ERROR_INVALID_OBJ_INDEX;
	72	else
	73	hpi_send_recv_ex(phm, phr, file);
	74	}
	75
	76	/* This is called from hpifunc.c functions, called by ALSA
	77	* (or other kernel process) In this case there is no file descriptor
	78	* available for the message cache code
	79	*/
	80	void hpi_send_recv(struct hpi_message phm, struct hpi_response phr)
	81	{
	82	hpi_send_recv_f(phm, phr, HOWNER_KERNEL);
	83	}
	84
	85	EXPORT_SYMBOL(hpi_send_recv);
	86	/* for radio-asihpi */
	87
	88	int asihpi_hpi_release(struct file *file)
	89	{
	90	struct hpi_message hm;
	91	struct hpi_response hr;
	92
	93	/* HPI_DEBUG_LOG(INFO,"hpi_release file %p, pid %d\n", file, current->pid); */
	94	/* close the subsystem just in case the application forgot to. */
	95	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
	96	HPI_SUBSYS_CLOSE);
	97	hpi_send_recv_ex(&hm, &hr, file);
	98	return 0;
	99	}
	100
	101	long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
	102	{
	103	struct hpi_ioctl_linux __user *phpi_ioctl_data;
	104	void __user *puhm;
	105	void __user *puhr;
	106	union hpi_message_buffer_v1 *hm;
	107	union hpi_response_buffer_v1 *hr;
	108	u16 res_max_size;
	109	u32 uncopied_bytes;
719f82d3 EB	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
6d0b898e EB	159	switch (hm->h.function) {
	160	case HPI_SUBSYS_CREATE_ADAPTER:
	161	case HPI_ADAPTER_DELETE:
	162	/* Application must not use these functions! */
	163	hr->h.size = sizeof(hr->h);
	164	hr->h.error = HPI_ERROR_INVALID_OPERATION;
	165	hr->h.function = hm->h.function;
	166	uncopied_bytes = copy_to_user(puhr, hr, hr->h.size);
	167	if (uncopied_bytes)
	168	err = -EFAULT;
	169	else
	170	err = 0;
	171	goto out;
	172	}
	173
3285ea10	174	hr->h.size = res_max_size;
719f82d3	175	if (hm->h.object == HPI_OBJ_SUBSYSTEM) {
6d0b898e	176	hpi_send_recv_f(&hm->m0, &hr->r0, file);
719f82d3 EB	177	} else {
	178	u16 __user *ptr = NULL;
	179	u32 size = 0;
	180
	181	/* -1=no data 0=read from user mem, 1=write to user mem */
	182	int wrflag = -1;
	183	u32 adapter = hm->h.adapter_index;
767cd365	184	struct hpi_adapter *pa = &adapters[adapter];
719f82d3	185
ae6ff61e	186	if ((adapter >= HPI_MAX_ADAPTERS) \|\| (!pa->type)) {
719f82d3 EB	187	hpi_init_response(&hr->r0, HPI_OBJ_ADAPTER,
	188	HPI_ADAPTER_OPEN,
	189	HPI_ERROR_BAD_ADAPTER_NUMBER);
	190
	191	uncopied_bytes =
	192	copy_to_user(puhr, hr, sizeof(hr->h));
	193	if (uncopied_bytes)
	194	err = -EFAULT;
	195	else
	196	err = 0;
	197	goto out;
	198	}
	199
767cd365	200	if (mutex_lock_interruptible(&pa->mutex)) {
719f82d3 EB	201	err = -EINTR;
	202	goto out;
	203	}
	204
	205	/* Dig out any pointers embedded in the message. */
	206	switch (hm->h.function) {
	207	case HPI_OSTREAM_WRITE:
	208	case HPI_ISTREAM_READ:{
	209	/* Yes, sparse, this is correct. */
	210	ptr = (u16 __user *)hm->m0.u.d.u.data.pb_data;
	211	size = hm->m0.u.d.u.data.data_size;
	212
	213	/* Allocate buffer according to application request.
	214	?Is it better to alloc/free for the duration
	215	of the transaction?
	216	*/
	217	if (pa->buffer_size < size) {
	218	HPI_DEBUG_LOG(DEBUG,
3285ea10	219	"Realloc adapter %d stream "
719f82d3 EB	220	"buffer from %zd to %d\n",
	221	hm->h.adapter_index,
	222	pa->buffer_size, size);
	223	if (pa->p_buffer) {
	224	pa->buffer_size = 0;
	225	vfree(pa->p_buffer);
	226	}
	227	pa->p_buffer = vmalloc(size);
	228	if (pa->p_buffer)
	229	pa->buffer_size = size;
	230	else {
	231	HPI_DEBUG_LOG(ERROR,
	232	"HPI could not allocate "
	233	"stream buffer size %d\n",
	234	size);
	235
767cd365	236	mutex_unlock(&pa->mutex);
719f82d3 EB	237	err = -EINVAL;
	238	goto out;
	239	}
	240	}
	241
	242	hm->m0.u.d.u.data.pb_data = pa->p_buffer;
	243	if (hm->h.function == HPI_ISTREAM_READ)
	244	/* from card, WRITE to user mem */
	245	wrflag = 1;
	246	else
	247	wrflag = 0;
	248	break;
	249	}
	250
	251	default:
	252	size = 0;
	253	break;
	254	}
	255
	256	if (size && (wrflag == 0)) {
	257	uncopied_bytes =
	258	copy_from_user(pa->p_buffer, ptr, size);
	259	if (uncopied_bytes)
	260	HPI_DEBUG_LOG(WARNING,
3285ea10	261	"Missed %d of %d "
719f82d3 EB	262	"bytes from user\n", uncopied_bytes,
	263	size);
	264	}
	265
	266	hpi_send_recv_f(&hm->m0, &hr->r0, file);
	267
	268	if (size && (wrflag == 1)) {
	269	uncopied_bytes =
	270	copy_to_user(ptr, pa->p_buffer, size);
	271	if (uncopied_bytes)
	272	HPI_DEBUG_LOG(WARNING,
3285ea10	273	"Missed %d of %d " "bytes to user\n",
719f82d3 EB	274	uncopied_bytes, size);
	275	}
	276
767cd365	277	mutex_unlock(&pa->mutex);
719f82d3 EB	278	}
	279
	280	/* on return response size must be set */
	281	/printk(KERN_INFO "response size %d\n", hr->h.wSize); /
	282
	283	if (!hr->h.size) {
	284	HPI_DEBUG_LOG(ERROR, "response zero size\n");
	285	err = -EFAULT;
	286	goto out;
	287	}
	288
	289	if (hr->h.size > res_max_size) {
	290	HPI_DEBUG_LOG(ERROR, "response too big %d %d\n", hr->h.size,
	291	res_max_size);
3285ea10 EB	292	hr->h.error = HPI_ERROR_RESPONSE_BUFFER_TOO_SMALL;
	293	hr->h.specific_error = hr->h.size;
	294	hr->h.size = sizeof(hr->h);
719f82d3 EB	295	}
	296
	297	uncopied_bytes = copy_to_user(puhr, hr, hr->h.size);
	298	if (uncopied_bytes) {
	299	HPI_DEBUG_LOG(ERROR, "uncopied bytes %d\n", uncopied_bytes);
	300	err = -EFAULT;
	301	goto out;
	302	}
	303
	304	out:
	305	kfree(hm);
	306	kfree(hr);
	307	return err;
	308	}
	309
	310	int __devinit asihpi_adapter_probe(struct pci_dev *pci_dev,
	311	const struct pci_device_id *pci_id)
	312	{
42258dab	313	int idx, nm;
719f82d3 EB	314	unsigned int memlen;
	315	struct hpi_message hm;
	316	struct hpi_response hr;
	317	struct hpi_adapter adapter;
	318	struct hpi_pci pci;
	319
	320	memset(&adapter, 0, sizeof(adapter));
	321
3285ea10 EB	322	dev_printk(KERN_DEBUG, &pci_dev->dev,
	323	"probe %04x:%04x,%04x:%04x,%04x\n", pci_dev->vendor,
	324	pci_dev->device, pci_dev->subsystem_vendor,
719f82d3 EB	325	pci_dev->subsystem_device, pci_dev->devfn);
719f82d3 EB	326
3285ea10 EB	327	if (pci_enable_device(pci_dev) < 0) {
	328	dev_printk(KERN_ERR, &pci_dev->dev,
	329	"pci_enable_device failed, disabling device\n");
	330	return -EIO;
	331	}
	332
	333	pci_set_master(pci_dev); /* also sets latency timer if < 16 */
	334
719f82d3 EB	335	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
	336	HPI_SUBSYS_CREATE_ADAPTER);
	337	hpi_init_response(&hr, HPI_OBJ_SUBSYSTEM, HPI_SUBSYS_CREATE_ADAPTER,
	338	HPI_ERROR_PROCESSING_MESSAGE);
	339
3285ea10	340	hm.adapter_index = HPI_ADAPTER_INDEX_INVALID;
719f82d3	341
719f82d3 EB	342	adapter.pci = pci_dev;
	343
	344	nm = HPI_MAX_ADAPTER_MEM_SPACES;
	345
	346	for (idx = 0; idx < nm; idx++) {
42258dab EB	347	HPI_DEBUG_LOG(INFO, "resource %d %pR\n", idx,
42258dab EB	348	&pci_dev->resource[idx]);
719f82d3 EB	349
	350	if (pci_resource_flags(pci_dev, idx) & IORESOURCE_MEM) {
	351	memlen = pci_resource_len(pci_dev, idx);
	352	adapter.ap_remapped_mem_base[idx] =
	353	ioremap(pci_resource_start(pci_dev, idx),
	354	memlen);
	355	if (!adapter.ap_remapped_mem_base[idx]) {
	356	HPI_DEBUG_LOG(ERROR,
	357	"ioremap failed, aborting\n");
	358	/* unmap previously mapped pci mem space */
	359	goto err;
	360	}
	361	}
	362
	363	pci.ap_mem_base[idx] = adapter.ap_remapped_mem_base[idx];
	364	}
	365
3285ea10	366	pci.pci_dev = pci_dev;
719f82d3 EB	367	hm.u.s.resource.bus_type = HPI_BUS_PCI;
	368	hm.u.s.resource.r.pci = &pci;
	369
	370	/* call CreateAdapterObject on the relevant hpi module */
	371	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
	372	if (hr.error)
	373	goto err;
	374
	375	if (prealloc_stream_buf) {
	376	adapter.p_buffer = vmalloc(prealloc_stream_buf);
	377	if (!adapter.p_buffer) {
	378	HPI_DEBUG_LOG(ERROR,
	379	"HPI could not allocate "
	380	"kernel buffer size %d\n",
	381	prealloc_stream_buf);
	382	goto err;
	383	}
	384	}
	385
	386	adapter.index = hr.u.s.adapter_index;
2f918a64	387	adapter.type = hr.u.s.adapter_type;
6d0b898e EB	388
	389	hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
	390	HPI_ADAPTER_OPEN);
719f82d3	391	hm.adapter_index = adapter.index;
6d0b898e	392	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
719f82d3	393
6d0b898e	394	if (hr.error)
719f82d3 EB	395	goto err;
	396
	397	adapter.snd_card_asihpi = NULL;
	398	/* WARNING can't init mutex in 'adapter'
	399	* and then copy it to adapters[] ?!?!
	400	*/
6d0b898e	401	adapters[adapter.index] = adapter;
719f82d3 EB	402	mutex_init(&adapters[adapter.index].mutex);
	403	pci_set_drvdata(pci_dev, &adapters[adapter.index]);
	404
3285ea10 EB	405	dev_printk(KERN_INFO, &pci_dev->dev,
	406	"probe succeeded for ASI%04X HPI index %d\n", adapter.type,
	407	adapter.index);
719f82d3 EB	408
	409	return 0;
	410
	411	err:
	412	for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; idx++) {
	413	if (adapter.ap_remapped_mem_base[idx]) {
	414	iounmap(adapter.ap_remapped_mem_base[idx]);
	415	adapter.ap_remapped_mem_base[idx] = NULL;
	416	}
	417	}
	418
	419	if (adapter.p_buffer) {
	420	adapter.buffer_size = 0;
	421	vfree(adapter.p_buffer);
	422	}
	423
	424	HPI_DEBUG_LOG(ERROR, "adapter_probe failed\n");
	425	return -ENODEV;
	426	}
	427
	428	void __devexit asihpi_adapter_remove(struct pci_dev *pci_dev)
	429	{
	430	int idx;
	431	struct hpi_message hm;
	432	struct hpi_response hr;
	433	struct hpi_adapter *pa;
5dbea6b1	434	pa = pci_get_drvdata(pci_dev);
719f82d3	435
6d0b898e EB	436	hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
	437	HPI_ADAPTER_DELETE);
	438	hm.adapter_index = pa->index;
719f82d3 EB	439	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
	440
	441	/* unmap PCI memory space, mapped during device init. */
	442	for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; idx++) {
	443	if (pa->ap_remapped_mem_base[idx]) {
	444	iounmap(pa->ap_remapped_mem_base[idx]);
	445	pa->ap_remapped_mem_base[idx] = NULL;
	446	}
	447	}
	448
c188dec3	449	if (pa->p_buffer)
719f82d3	450	vfree(pa->p_buffer);
719f82d3 EB	451
719f82d3 EB	452	pci_set_drvdata(pci_dev, NULL);
3285ea10 EB	453	if (1)
	454	dev_printk(KERN_INFO, &pci_dev->dev,
	455	"remove %04x:%04x,%04x:%04x,%04x," " HPI index %d.\n",
	456	pci_dev->vendor, pci_dev->device,
	457	pci_dev->subsystem_vendor, pci_dev->subsystem_device,
	458	pci_dev->devfn, pa->index);
c188dec3 EB	459
c188dec3 EB	460	memset(pa, 0, sizeof(*pa));
719f82d3 EB	461	}
	462
	463	void __init asihpi_init(void)
	464	{
	465	struct hpi_message hm;
	466	struct hpi_response hr;
	467
	468	memset(adapters, 0, sizeof(adapters));
	469
1dd6aaaa	470	printk(KERN_INFO "ASIHPI driver " HPI_VER_STRING "\n");
719f82d3 EB	471
	472	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
	473	HPI_SUBSYS_DRIVER_LOAD);
	474	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
	475	}
	476
	477	void asihpi_exit(void)
	478	{
	479	struct hpi_message hm;
	480	struct hpi_response hr;
	481
	482	hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
	483	HPI_SUBSYS_DRIVER_UNLOAD);
	484	hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
	485	}