[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / comedi / drivers / icp_multi.h

/*
    comedi/drivers/icp_multi.h

    Stuff for ICP Multi

    Author: Anne Smorthit <anne.smorthit@sfwte.ch>

*/

#ifndef _ICP_MULTI_H_
#define _ICP_MULTI_H_

#include "../comedidev.h"
#include "comedi_pci.h"

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

struct pcilst_struct {
	struct pcilst_struct *next;
	int used;
	struct pci_dev *pcidev;
	unsigned short vendor;
	unsigned short device;
	unsigned char pci_bus;
	unsigned char pci_slot;
	unsigned char pci_func;
	resource_size_t io_addr[5];
	unsigned int irq;
};

struct pcilst_struct *inova_devices;
/* ptr to root list of all Inova devices */

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

static void pci_card_list_init(unsigned short pci_vendor, char display);
static void pci_card_list_cleanup(unsigned short pci_vendor);
static struct pcilst_struct *find_free_pci_card_by_device(unsigned short
							  vendor_id,
							  unsigned short
							  device_id);
static int find_free_pci_card_by_position(unsigned short vendor_id,
					  unsigned short device_id,
					  unsigned short pci_bus,
					  unsigned short pci_slot,
					  struct pcilst_struct **card);
static struct pcilst_struct *select_and_alloc_pci_card(unsigned short vendor_id,
						       unsigned short device_id,
						       unsigned short pci_bus,
						       unsigned short pci_slot);

static int pci_card_alloc(struct pcilst_struct *amcc);
static int pci_card_free(struct pcilst_struct *amcc);
static void pci_card_list_display(void);
static int pci_card_data(struct pcilst_struct *amcc,
			 unsigned char *pci_bus, unsigned char *pci_slot,
			 unsigned char *pci_func, resource_size_t * io_addr,
			 unsigned int *irq);

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

/* build list of Inova cards in this system */
static void pci_card_list_init(unsigned short pci_vendor, char display)
{
	struct pci_dev *pcidev = NULL;
	struct pcilst_struct *inova, *last;
	int i;

	inova_devices = NULL;
	last = NULL;

	for_each_pci_dev(pcidev) {
		if (pcidev->vendor == pci_vendor) {
			inova = kzalloc(sizeof(*inova), GFP_KERNEL);
			if (!inova) {
				printk
				    ("icp_multi: pci_card_list_init: allocation failed\n");
				pci_dev_put(pcidev);
				break;
			}

			inova->pcidev = pci_dev_get(pcidev);
			if (last) {
				last->next = inova;
			} else {
				inova_devices = inova;
			}
			last = inova;

			inova->vendor = pcidev->vendor;
			inova->device = pcidev->device;
			inova->pci_bus = pcidev->bus->number;
			inova->pci_slot = PCI_SLOT(pcidev->devfn);
			inova->pci_func = PCI_FUNC(pcidev->devfn);
			/* Note: resources may be invalid if PCI device
			 * not enabled, but they are corrected in
			 * pci_card_alloc. */
			for (i = 0; i < 5; i++)
				inova->io_addr[i] =
				    pci_resource_start(pcidev, i);
			inova->irq = pcidev->irq;
		}
	}

	if (display)
		pci_card_list_display();
}

/****************************************************************************/
/* free up list of amcc cards in this system */
static void pci_card_list_cleanup(unsigned short pci_vendor)
{
	struct pcilst_struct *inova, *next;

	for (inova = inova_devices; inova; inova = next) {
		next = inova->next;
		pci_dev_put(inova->pcidev);
		kfree(inova);
	}

	inova_devices = NULL;
}

/****************************************************************************/
/* find first unused card with this device_id */
static struct pcilst_struct *find_free_pci_card_by_device(unsigned short
							  vendor_id,
							  unsigned short
							  device_id)
{
	struct pcilst_struct *inova, *next;

	for (inova = inova_devices; inova; inova = next) {
		next = inova->next;
		if ((!inova->used) && (inova->device == device_id)
		    && (inova->vendor == vendor_id))
			return inova;

	}

	return NULL;
}

/****************************************************************************/
/* find card on requested position */
static int find_free_pci_card_by_position(unsigned short vendor_id,
					  unsigned short device_id,
					  unsigned short pci_bus,
					  unsigned short pci_slot,
					  struct pcilst_struct **card)
{
	struct pcilst_struct *inova, *next;

	*card = NULL;
	for (inova = inova_devices; inova; inova = next) {
		next = inova->next;
		if ((inova->vendor == vendor_id) && (inova->device == device_id)
		    && (inova->pci_bus == pci_bus)
		    && (inova->pci_slot == pci_slot)) {
			if (!(inova->used)) {
				*card = inova;
				return 0;	/* ok, card is found */
			} else {
				return 2;	/* card exist but is used */
			}
		}
	}

	return 1;		/* no card found */
}

/****************************************************************************/
/* mark card as used */
static int pci_card_alloc(struct pcilst_struct *inova)
{
	int i;

	if (!inova) {
		printk(" - BUG!! inova is NULL!\n");
		return -1;
	}

	if (inova->used)
		return 1;
	if (comedi_pci_enable(inova->pcidev, "icp_multi")) {
		printk(" - Can't enable PCI device and request regions!\n");
		return -1;
	}
	/* Resources will be accurate now. */
	for (i = 0; i < 5; i++)
		inova->io_addr[i] = pci_resource_start(inova->pcidev, i);
	inova->irq = inova->pcidev->irq;
	inova->used = 1;
	return 0;
}

/****************************************************************************/
/* mark card as free */
static int pci_card_free(struct pcilst_struct *inova)
{
	if (!inova)
		return -1;

	if (!inova->used)
		return 1;
	inova->used = 0;
	comedi_pci_disable(inova->pcidev);
	return 0;
}

/****************************************************************************/
/* display list of found cards */
static void pci_card_list_display(void)
{
	struct pcilst_struct *inova, *next;

	printk("Anne's List of pci cards\n");
	printk("bus:slot:func vendor device io_inova io_daq irq used\n");

	for (inova = inova_devices; inova; inova = next) {
		next = inova->next;
		printk
		    ("%2d   %2d   %2d  0x%4x 0x%4x   0x%8llx 0x%8llx  %2u  %2d\n",
		     inova->pci_bus, inova->pci_slot, inova->pci_func,
		     inova->vendor, inova->device,
		     (unsigned long long)inova->io_addr[0],
		     (unsigned long long)inova->io_addr[2], inova->irq,
		     inova->used);

	}
}

/****************************************************************************/
/* return all card information for driver */
static int pci_card_data(struct pcilst_struct *inova,
			 unsigned char *pci_bus, unsigned char *pci_slot,
			 unsigned char *pci_func, resource_size_t * io_addr,
			 unsigned int *irq)
{
	int i;

	if (!inova)
		return -1;
	*pci_bus = inova->pci_bus;
	*pci_slot = inova->pci_slot;
	*pci_func = inova->pci_func;
	for (i = 0; i < 5; i++)
		io_addr[i] = inova->io_addr[i];
	*irq = inova->irq;
	return 0;
}

/****************************************************************************/
/* select and alloc card */
static struct pcilst_struct *select_and_alloc_pci_card(unsigned short vendor_id,
						       unsigned short device_id,
						       unsigned short pci_bus,
						       unsigned short pci_slot)
{
	struct pcilst_struct *card;
	int err;

	if ((pci_bus < 1) & (pci_slot < 1)) {	/* use autodetection */

		card = find_free_pci_card_by_device(vendor_id, device_id);
		if (card == NULL) {
			printk(" - Unused card not found in system!\n");
			return NULL;
		}
	} else {
		switch (find_free_pci_card_by_position(vendor_id, device_id,
						       pci_bus, pci_slot,
						       &card)) {
		case 1:
			printk
			    (" - Card not found on requested position b:s %d:%d!\n",
			     pci_bus, pci_slot);
			return NULL;
		case 2:
			printk
			    (" - Card on requested position is used b:s %d:%d!\n",
			     pci_bus, pci_slot);
			return NULL;
		}
	}

	err = pci_card_alloc(card);
	if (err != 0) {
		if (err > 0)
			printk(" - Can't allocate card!\n");
		/* else: error already printed. */
		return NULL;
	}

	return card;
}

#endif
Commit	Line	Data
96341f71 AS	1	/*
	2	comedi/drivers/icp_multi.h
	3
	4	Stuff for ICP Multi
	5
	6	Author: Anne Smorthit <anne.smorthit@sfwte.ch>
	7
	8	*/
	9
	10	#ifndef _ICP_MULTI_H_
	11	#define _ICP_MULTI_H_
	12
	13	#include "../comedidev.h"
	14	#include "comedi_pci.h"
	15
	16	/****************************************************************************/
	17
	18	struct pcilst_struct {
	19	struct pcilst_struct *next;
	20	int used;
	21	struct pci_dev *pcidev;
	22	unsigned short vendor;
	23	unsigned short device;
	24	unsigned char pci_bus;
	25	unsigned char pci_slot;
	26	unsigned char pci_func;
	27	resource_size_t io_addr[5];
	28	unsigned int irq;
	29	};
	30
b6c77757 BP	31	struct pcilst_struct *inova_devices;
b6c77757 BP	32	/* ptr to root list of all Inova devices */
96341f71 AS	33
	34	/****************************************************************************/
	35
	36	static void pci_card_list_init(unsigned short pci_vendor, char display);
	37	static void pci_card_list_cleanup(unsigned short pci_vendor);
	38	static struct pcilst_struct *find_free_pci_card_by_device(unsigned short
0a85b6f0 MT	39	vendor_id,
	40	unsigned short
	41	device_id);
96341f71	42	static int find_free_pci_card_by_position(unsigned short vendor_id,
0a85b6f0 MT	43	unsigned short device_id,
	44	unsigned short pci_bus,
	45	unsigned short pci_slot,
	46	struct pcilst_struct **card);
96341f71	47	static struct pcilst_struct *select_and_alloc_pci_card(unsigned short vendor_id,
0a85b6f0 MT	48	unsigned short device_id,
	49	unsigned short pci_bus,
	50	unsigned short pci_slot);
96341f71 AS	51
	52	static int pci_card_alloc(struct pcilst_struct *amcc);
	53	static int pci_card_free(struct pcilst_struct *amcc);
	54	static void pci_card_list_display(void);
	55	static int pci_card_data(struct pcilst_struct *amcc,
0a85b6f0 MT	56	unsigned char pci_bus, unsigned char pci_slot,
	57	unsigned char pci_func, resource_size_t io_addr,
	58	unsigned int *irq);
96341f71 AS	59
	60	/****************************************************************************/
	61
	62	/* build list of Inova cards in this system */
	63	static void pci_card_list_init(unsigned short pci_vendor, char display)
	64	{
20fb2280	65	struct pci_dev *pcidev = NULL;
96341f71 AS	66	struct pcilst_struct inova, last;
	67	int i;
	68
	69	inova_devices = NULL;
	70	last = NULL;
	71
20fb2280	72	for_each_pci_dev(pcidev) {
96341f71	73	if (pcidev->vendor == pci_vendor) {
7a6cb0d5	74	inova = kzalloc(sizeof(*inova), GFP_KERNEL);
96341f71	75	if (!inova) {
0a85b6f0 MT	76	printk
0a85b6f0 MT	77	("icp_multi: pci_card_list_init: allocation failed\n");
96341f71 AS	78	pci_dev_put(pcidev);
	79	break;
	80	}
96341f71 AS	81
	82	inova->pcidev = pci_dev_get(pcidev);
	83	if (last) {
	84	last->next = inova;
	85	} else {
	86	inova_devices = inova;
	87	}
	88	last = inova;
	89
	90	inova->vendor = pcidev->vendor;
	91	inova->device = pcidev->device;
	92	inova->pci_bus = pcidev->bus->number;
	93	inova->pci_slot = PCI_SLOT(pcidev->devfn);
	94	inova->pci_func = PCI_FUNC(pcidev->devfn);
	95	/* Note: resources may be invalid if PCI device
	96	* not enabled, but they are corrected in
	97	* pci_card_alloc. */
	98	for (i = 0; i < 5; i++)
	99	inova->io_addr[i] =
0a85b6f0	100	pci_resource_start(pcidev, i);
96341f71 AS	101	inova->irq = pcidev->irq;
	102	}
	103	}
	104
	105	if (display)
	106	pci_card_list_display();
	107	}
	108
	109	/****************************************************************************/
	110	/* free up list of amcc cards in this system */
	111	static void pci_card_list_cleanup(unsigned short pci_vendor)
	112	{
	113	struct pcilst_struct inova, next;
	114
	115	for (inova = inova_devices; inova; inova = next) {
	116	next = inova->next;
	117	pci_dev_put(inova->pcidev);
	118	kfree(inova);
	119	}
	120
	121	inova_devices = NULL;
	122	}
	123
	124	/****************************************************************************/
	125	/* find first unused card with this device_id */
	126	static struct pcilst_struct *find_free_pci_card_by_device(unsigned short
0a85b6f0 MT	127	vendor_id,
	128	unsigned short
	129	device_id)
96341f71 AS	130	{
	131	struct pcilst_struct inova, next;
	132
	133	for (inova = inova_devices; inova; inova = next) {
	134	next = inova->next;
	135	if ((!inova->used) && (inova->device == device_id)
0a85b6f0	136	&& (inova->vendor == vendor_id))
96341f71 AS	137	return inova;
	138
	139	}
	140
	141	return NULL;
	142	}
	143
	144	/****************************************************************************/
	145	/* find card on requested position */
	146	static int find_free_pci_card_by_position(unsigned short vendor_id,
0a85b6f0 MT	147	unsigned short device_id,
	148	unsigned short pci_bus,
	149	unsigned short pci_slot,
	150	struct pcilst_struct **card)
96341f71 AS	151	{
	152	struct pcilst_struct inova, next;
	153
	154	*card = NULL;
	155	for (inova = inova_devices; inova; inova = next) {
	156	next = inova->next;
	157	if ((inova->vendor == vendor_id) && (inova->device == device_id)
0a85b6f0 MT	158	&& (inova->pci_bus == pci_bus)
0a85b6f0 MT	159	&& (inova->pci_slot == pci_slot)) {
96341f71 AS	160	if (!(inova->used)) {
96341f71 AS	161	*card = inova;
b6c77757	162	return 0; /* ok, card is found */
96341f71	163	} else {
b6c77757	164	return 2; /* card exist but is used */
96341f71 AS	165	}
	166	}
	167	}
	168
b6c77757	169	return 1; /* no card found */
96341f71 AS	170	}
	171
	172	/****************************************************************************/
	173	/* mark card as used */
	174	static int pci_card_alloc(struct pcilst_struct *inova)
	175	{
	176	int i;
	177
	178	if (!inova) {
5f74ea14	179	printk(" - BUG!! inova is NULL!\n");
96341f71 AS	180	return -1;
	181	}
	182
	183	if (inova->used)
	184	return 1;
	185	if (comedi_pci_enable(inova->pcidev, "icp_multi")) {
5f74ea14	186	printk(" - Can't enable PCI device and request regions!\n");
96341f71 AS	187	return -1;
	188	}
	189	/* Resources will be accurate now. */
	190	for (i = 0; i < 5; i++)
	191	inova->io_addr[i] = pci_resource_start(inova->pcidev, i);
	192	inova->irq = inova->pcidev->irq;
	193	inova->used = 1;
	194	return 0;
	195	}
	196
	197	/****************************************************************************/
	198	/* mark card as free */
	199	static int pci_card_free(struct pcilst_struct *inova)
	200	{
	201	if (!inova)
	202	return -1;
	203
	204	if (!inova->used)
	205	return 1;
	206	inova->used = 0;
	207	comedi_pci_disable(inova->pcidev);
	208	return 0;
	209	}
	210
	211	/****************************************************************************/
	212	/* display list of found cards */
	213	static void pci_card_list_display(void)
	214	{
	215	struct pcilst_struct inova, next;
	216
	217	printk("Anne's List of pci cards\n");
	218	printk("bus:slot:func vendor device io_inova io_daq irq used\n");
	219
	220	for (inova = inova_devices; inova; inova = next) {
	221	next = inova->next;
0a85b6f0 MT	222	printk
	223	("%2d %2d %2d 0x%4x 0x%4x 0x%8llx 0x%8llx %2u %2d\n",
	224	inova->pci_bus, inova->pci_slot, inova->pci_func,
	225	inova->vendor, inova->device,
	226	(unsigned long long)inova->io_addr[0],
	227	(unsigned long long)inova->io_addr[2], inova->irq,
	228	inova->used);
96341f71 AS	229
	230	}
	231	}
	232
	233	/****************************************************************************/
	234	/* return all card information for driver */
	235	static int pci_card_data(struct pcilst_struct *inova,
0a85b6f0 MT	236	unsigned char pci_bus, unsigned char pci_slot,
	237	unsigned char pci_func, resource_size_t io_addr,
	238	unsigned int *irq)
96341f71 AS	239	{
	240	int i;
	241
	242	if (!inova)
	243	return -1;
	244	*pci_bus = inova->pci_bus;
	245	*pci_slot = inova->pci_slot;
	246	*pci_func = inova->pci_func;
	247	for (i = 0; i < 5; i++)
	248	io_addr[i] = inova->io_addr[i];
	249	*irq = inova->irq;
	250	return 0;
	251	}
	252
	253	/****************************************************************************/
	254	/* select and alloc card */
	255	static struct pcilst_struct *select_and_alloc_pci_card(unsigned short vendor_id,
0a85b6f0 MT	256	unsigned short device_id,
	257	unsigned short pci_bus,
	258	unsigned short pci_slot)
96341f71 AS	259	{
	260	struct pcilst_struct *card;
	261	int err;
	262
b6c77757	263	if ((pci_bus < 1) & (pci_slot < 1)) { /* use autodetection */
197c82bf	264
51b713a6	265	card = find_free_pci_card_by_device(vendor_id, device_id);
197c82bf	266	if (card == NULL) {
5f74ea14	267	printk(" - Unused card not found in system!\n");
96341f71 AS	268	return NULL;
	269	}
	270	} else {
	271	switch (find_free_pci_card_by_position(vendor_id, device_id,
0a85b6f0 MT	272	pci_bus, pci_slot,
0a85b6f0 MT	273	&card)) {
96341f71	274	case 1:
5f74ea14	275	printk
0a85b6f0 MT	276	(" - Card not found on requested position b:s %d:%d!\n",
0a85b6f0 MT	277	pci_bus, pci_slot);
96341f71 AS	278	return NULL;
96341f71 AS	279	case 2:
5f74ea14	280	printk
0a85b6f0 MT	281	(" - Card on requested position is used b:s %d:%d!\n",
0a85b6f0 MT	282	pci_bus, pci_slot);
96341f71 AS	283	return NULL;
	284	}
	285	}
	286
197c82bf	287	err = pci_card_alloc(card);
51b713a6	288	if (err != 0) {
96341f71	289	if (err > 0)
5f74ea14	290	printk(" - Can't allocate card!\n");
96341f71 AS	291	/* else: error already printed. */
	292	return NULL;
	293	}
	294
	295	return card;
	296	}
	297
	298	#endif